1639413316 has 12 divisors (see below), whose sum is σ = 2946513388. Its totient is φ = 797552352.

The previous prime is 1639413287. The next prime is 1639413329. The reversal of 1639413316 is 6133149361.

It can be written as a sum of positive squares in 2 ways, for example, as 1417522500 + 221890816 = 37650^2 + 14896^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5538411 + ... + 5538706.

Almost surely, 2^1639413316 is an apocalyptic number.

It is an amenable number.

1639413316 is a deficient number, since it is larger than the sum of its proper divisors (1307100072).

1639413316 is a wasteful number, since it uses less digits than its factorization.

1639413316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11077158 (or 11077156 counting only the distinct ones).

The product of its digits is 34992, while the sum is 37.

The square root of 1639413316 is about 40489.6692503162. The cubic root of 1639413316 is about 1179.1330690645.

The spelling of 1639413316 in words is "one billion, six hundred thirty-nine million, four hundred thirteen thousand, three hundred sixteen".