1640352604 has 24 divisors (see below), whose sum is σ = 3132687600. Its totient is φ = 745351680.

The previous prime is 1640352587. The next prime is 1640352629. The reversal of 1640352604 is 4062530461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177162 + ... + 186190.

It is an arithmetic number, because the mean of its divisors is an integer number (130528650).

Almost surely, 2^1640352604 is an apocalyptic number.

It is an amenable number.

1640352604 is a deficient number, since it is larger than the sum of its proper divisors (1492334996).

1640352604 is a wasteful number, since it uses less digits than its factorization.

1640352604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13173 (or 13171 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 1640352604 is about 40501.2666962405. The cubic root of 1640352604 is about 1179.3582175123.

The spelling of 1640352604 in words is "one billion, six hundred forty million, three hundred fifty-two thousand, six hundred four".