1640101344 has 72 divisors (see below), whose sum is σ = 5008180968. Its totient is φ = 468599040.

The previous prime is 1640101321. The next prime is 1640101369. The reversal of 1640101344 is 4431010461.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169627 + ... + 179034.

It is an arithmetic number, because the mean of its divisors is an integer number (69558069).

Almost surely, 2^1640101344 is an apocalyptic number.

1640101344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1640101344 is an abundant number, since it is smaller than the sum of its proper divisors (3368079624).

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

1640101344 is a wasteful number, since it uses less digits than its factorization.

1640101344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348688 (or 348673 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1640101344 is about 40498.1646991564. The cubic root of 1640101344 is about 1179.2979986146.

The spelling of 1640101344 in words is "one billion, six hundred forty million, one hundred one thousand, three hundred forty-four".