649145882 has 48 divisors (see below), whose sum is σ = 1276442496. Its totient is φ = 241903200.

The previous prime is 649145879. The next prime is 649145891. The reversal of 649145882 is 288541946.

It is a super-2 number, since 2×649145882² = 842780752235115848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30632 + ... + 47292.

It is an arithmetic number, because the mean of its divisors is an integer number (26592552).

Almost surely, 2^649145882 is an apocalyptic number.

649145882 is a deficient number, since it is larger than the sum of its proper divisors (627296614).

649145882 is a wasteful number, since it uses less digits than its factorization.

649145882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16715 (or 16704 counting only the distinct ones).

The product of its digits is 552960, while the sum is 47.

The square root of 649145882 is about 25478.3414295358. The cubic root of 649145882 is about 865.8595183055.

The spelling of 649145882 in words is "six hundred forty-nine million, one hundred forty-five thousand, eight hundred eighty-two".