3815961144 has 16 divisors (see below), whose sum is σ = 9539902920. Its totient is φ = 1271987040.

The previous prime is 3815961139. The next prime is 3815961157. The reversal of 3815961144 is 4411695183.

It is a junction number, because it is equal to n+sod(n) for n = 3815961096 and 3815961105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79499167 + ... + 79499214.

Almost surely, 2^3815961144 is an apocalyptic number.

It is an amenable number.

3815961144 is an abundant number, since it is smaller than the sum of its proper divisors (5723941776).

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

3815961144 is a wasteful number, since it uses less digits than its factorization.

3815961144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158998390 (or 158998386 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 3815961144 is about 61773.4663427592. The cubic root of 3815961144 is about 1562.6725424734.

The spelling of 3815961144 in words is "three billion, eight hundred fifteen million, nine hundred sixty-one thousand, one hundred forty-four".