1664883276 has 48 divisors (see below), whose sum is σ = 4523468544. Its totient is φ = 466704576.

The previous prime is 1664883271. The next prime is 1664883281. The reversal of 1664883276 is 6723884661.

It is an interprime number because it is at equal distance from previous prime (1664883271) and next prime (1664883281).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1664883271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182530 + ... + 191433.

It is an arithmetic number, because the mean of its divisors is an integer number (94238928).

Almost surely, 2^1664883276 is an apocalyptic number.

It is an amenable number.

1664883276 is an abundant number, since it is smaller than the sum of its proper divisors (2858585268).

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

1664883276 is a wasteful number, since it uses less digits than its factorization.

1664883276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374030 (or 374028 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The square root of 1664883276 is about 40802.9812146122. The cubic root of 1664883276 is about 1185.2080618837.

The spelling of 1664883276 in words is "one billion, six hundred sixty-four million, eight hundred eighty-three thousand, two hundred seventy-six".