649120494 has 32 divisors (see below), whose sum is σ = 1419151104. Its totient is φ = 196302080.

The previous prime is 649120471. The next prime is 649120517. The reversal of 649120494 is 494021946.

It is an interprime number because it is at equal distance from previous prime (649120471) and next prime (649120517).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23422 + ... + 42974.

It is an arithmetic number, because the mean of its divisors is an integer number (44348472).

Almost surely, 2^649120494 is an apocalyptic number.

649120494 is an abundant number, since it is smaller than the sum of its proper divisors (770030610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649120494 is a wasteful number, since it uses less digits than its factorization.

649120494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20072.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 649120494 is about 25477.8431975707. The cubic root of 649120494 is about 865.8482302789.

The spelling of 649120494 in words is "six hundred forty-nine million, one hundred twenty thousand, four hundred ninety-four".