1649858136 has 16 divisors (see below), whose sum is σ = 4124645400. Its totient is φ = 549952704.

The previous prime is 1649858101. The next prime is 1649858153. The reversal of 1649858136 is 6318589461.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 34372021 + ... + 34372068.

Almost surely, 2^1649858136 is an apocalyptic number.

It is an amenable number.

1649858136 is an abundant number, since it is smaller than the sum of its proper divisors (2474787264).

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

1649858136 is a wasteful number, since it uses less digits than its factorization.

1649858136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68744098 (or 68744094 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 51.

The square root of 1649858136 is about 40618.4457605162. The cubic root of 1649858136 is about 1181.6318836726.

The spelling of 1649858136 in words is "one billion, six hundred forty-nine million, eight hundred fifty-eight thousand, one hundred thirty-six".