3639418491076 has 27 divisors (see below), whose sum is σ = 6389177332909. Its totient is φ = 1813957451648.

The previous prime is 3639418491017. The next prime is 3639418491083. The reversal of 3639418491076 is 6701948149363.

The square root of 3639418491076 is 1907726.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2371938812100 + 1267479678976 = 1540110^2 + 1125824^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1369745940 + ... + 1369748596.

Almost surely, 2^{3639418491076} is an apocalyptic number.

3639418491076 is the 1907726-th square number.

It is an amenable number.

3639418491076 is a deficient number, since it is larger than the sum of its proper divisors (2749758841833).

3639418491076 is an frugal number, since it uses more digits than its factorization.

3639418491076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6036 (or 3018 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 61.

The spelling of 3639418491076 in words is "three trillion, six hundred thirty-nine billion, four hundred eighteen million, four hundred ninety-one thousand, seventy-six".