2015649628 has 12 divisors (see below), whose sum is σ = 3545293752. Its totient is φ = 1002708560.

The previous prime is 2015649613. The next prime is 2015649673. The reversal of 2015649628 is 8269465102.

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, 1278178 + ... + 1279753.

It is an arithmetic number, because the mean of its divisors is an integer number (295441146).

Almost surely, 2^2015649628 is an apocalyptic number.

It is an amenable number.

2015649628 is a deficient number, since it is larger than the sum of its proper divisors (1529644124).

2015649628 is a wasteful number, since it uses less digits than its factorization.

2015649628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558132 (or 2558130 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 2015649628 is about 44895.9867694207. The cubic root of 2015649628 is about 1263.1987315761.

The spelling of 2015649628 in words is "two billion, fifteen million, six hundred forty-nine thousand, six hundred twenty-eight".