1640083764 has 24 divisors (see below), whose sum is σ = 4174759008. Its totient is φ = 496995040.

The previous prime is 1640083751. The next prime is 1640083771. The reversal of 1640083764 is 4673800461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6212307 + ... + 6212570.

It is an arithmetic number, because the mean of its divisors is an integer number (173948292).

Almost surely, 2^1640083764 is an apocalyptic number.

It is an amenable number.

1640083764 is an abundant number, since it is smaller than the sum of its proper divisors (2534675244).

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

1640083764 is a wasteful number, since it uses less digits than its factorization.

1640083764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12424895 (or 12424893 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 1640083764 is about 40497.9476517021. The cubic root of 1640083764 is about 1179.2937850268.

The spelling of 1640083764 in words is "one billion, six hundred forty million, eighty-three thousand, seven hundred sixty-four".