1664233230 has 64 divisors (see below), whose sum is σ = 4367748096. Its totient is φ = 402480000.

The previous prime is 1664233217. The next prime is 1664233243. The reversal of 1664233230 is 323324661.

It is an interprime number because it is at equal distance from previous prime (1664233217) and next prime (1664233243).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136380 + ... + 148080.

It is an arithmetic number, because the mean of its divisors is an integer number (68246064).

Almost surely, 2^1664233230 is an apocalyptic number.

1664233230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1664233230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2183874048).

1664233230 is an abundant number, since it is smaller than the sum of its proper divisors (2703514866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1664233230 is a wasteful number, since it uses less digits than its factorization.

1664233230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12153.

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 1664233230 is about 40795.0147689641. The cubic root of 1664233230 is about 1185.0537887956.

Adding to 1664233230 its reverse (323324661), we get a palindrome (1987557891).

It can be divided in two parts, 166423 and 3230, that added together give a triangular number (169653 = T₅₈₂).

The spelling of 1664233230 in words is "one billion, six hundred sixty-four million, two hundred thirty-three thousand, two hundred thirty".