2815961144 has 16 divisors (see below), whose sum is σ = 5280711720. Its totient is φ = 1407771360.

The previous prime is 2815961077. The next prime is 2815961171. The reversal of 2815961144 is 4411695182.

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, 41279 + ... + 85649.

Almost surely, 2^2815961144 is an apocalyptic number.

It is an amenable number.

2815961144 is a deficient number, since it is larger than the sum of its proper divisors (2464750576).

2815961144 is a wasteful number, since it uses less digits than its factorization.

2815961144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52310 (or 52306 counting only the distinct ones).

The product of its digits is 69120, while the sum is 41.

The square root of 2815961144 is about 53065.6305342733. The cubic root of 2815961144 is about 1412.1328390620.

The spelling of 2815961144 in words is "two billion, eight hundred fifteen million, nine hundred sixty-one thousand, one hundred forty-four".