1864336032 has 144 divisors (see below), whose sum is σ = 5894074368. Its totient is φ = 555102720.

The previous prime is 1864336009. The next prime is 1864336081. The reversal of 1864336032 is 2306334681.

1864336032 is a `hidden beast` number, since 1 + 8 + 6 + 43 + 3 + 603 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108033 + ... + 124095.

It is an arithmetic number, because the mean of its divisors is an integer number (40931072).

Almost surely, 2^1864336032 is an apocalyptic number.

1864336032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1864336032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2947037184).

1864336032 is an abundant number, since it is smaller than the sum of its proper divisors (4029738336).

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

1864336032 is a wasteful number, since it uses less digits than its factorization.

1864336032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16123 (or 16112 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 1864336032 is about 43177.9577099242. The cubic root of 1864336032 is about 1230.7638483643.

The spelling of 1864336032 in words is "one billion, eight hundred sixty-four million, three hundred thirty-six thousand, thirty-two".