1640413604 has 6 divisors (see below), whose sum is σ = 2870723814. Its totient is φ = 820206800.

The previous prime is 1640413603. The next prime is 1640413627. The reversal of 1640413604 is 4063140461.

It can be written as a sum of positive squares in only one way, i.e., 1640412004 + 1600 = 40502^2 + 40^2 .

It is not an unprimeable number, because it can be changed into a prime (1640413601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205051697 + ... + 205051704.

It is an arithmetic number, because the mean of its divisors is an integer number (478453969).

Almost surely, 2^1640413604 is an apocalyptic number.

It is an amenable number.

1640413604 is a deficient number, since it is larger than the sum of its proper divisors (1230310210).

1640413604 is a wasteful number, since it uses less digits than its factorization.

1640413604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410103405 (or 410103403 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1640413604 is about 40502.0197521062. The cubic root of 1640413604 is about 1179.3728363122.

The spelling of 1640413604 in words is "one billion, six hundred forty million, four hundred thirteen thousand, six hundred four".