1640120496 has 80 divisors (see below), whose sum is σ = 4846665984. Its totient is φ = 468179712.

The previous prime is 1640120479. The next prime is 1640120567. The reversal of 1640120496 is 6940210461.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671790 + ... + 674226.

Almost surely, 2^1640120496 is an apocalyptic number.

1640120496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1640120496 is an abundant number, since it is smaller than the sum of its proper divisors (3206545488).

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

1640120496 is a wasteful number, since it uses less digits than its factorization.

1640120496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4458 (or 4452 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1640120496 is about 40498.4011536258. The cubic root of 1640120496 is about 1179.3025889463.

The spelling of 1640120496 in words is "one billion, six hundred forty million, one hundred twenty thousand, four hundred ninety-six".