1649572316 has 24 divisors (see below), whose sum is σ = 3412909920. Its totient is φ = 682581312.

The previous prime is 1649572303. The next prime is 1649572333. The reversal of 1649572316 is 6132759461.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1014935 + ... + 1016558.

It is an arithmetic number, because the mean of its divisors is an integer number (142204580).

Almost surely, 2^1649572316 is an apocalyptic number.

It is an amenable number.

1649572316 is an abundant number, since it is smaller than the sum of its proper divisors (1763337604).

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

1649572316 is a wasteful number, since it uses less digits than its factorization.

1649572316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031533 (or 2031531 counting only the distinct ones).

The product of its digits is 272160, while the sum is 44.

The square root of 1649572316 is about 40614.9272558748. The cubic root of 1649572316 is about 1181.5636447693.

The spelling of 1649572316 in words is "one billion, six hundred forty-nine million, five hundred seventy-two thousand, three hundred sixteen".