490638607936 has 21 divisors (see below), whose sum is σ = 973622107489. Its totient is φ = 245316502144.

The previous prime is 490638607903. The next prime is 490638607973. The reversal of 490638607936 is 639706836094.

The square root of 490638607936 is 700456.

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., 13632897600 + 477005710336 = 116760^2 + 690656^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5559870 + ... + 5647426.

Almost surely, 2^490638607936 is an apocalyptic number.

490638607936 is the 700456-th square number.

It is an amenable number.

490638607936 is a deficient number, since it is larger than the sum of its proper divisors (482983499553).

490638607936 is an frugal number, since it uses more digits than its factorization.

490638607936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175126 (or 87559 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 61.

The spelling of 490638607936 in words is "four hundred ninety billion, six hundred thirty-eight million, six hundred seven thousand, nine hundred thirty-six".