1915565948 has 24 divisors (see below), whose sum is σ = 3511644192. Its totient is φ = 912564224.

The previous prime is 1915565941. The next prime is 1915565963. The reversal of 1915565948 is 8495655191.

It is a super-2 number, since 2×1915565948² = 7338785802274277408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1915565948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1915565941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16865 + ... + 64152.

It is an arithmetic number, because the mean of its divisors is an integer number (146318508).

Almost surely, 2^1915565948 is an apocalyptic number.

It is an amenable number.

1915565948 is a deficient number, since it is larger than the sum of its proper divisors (1596078244).

1915565948 is a wasteful number, since it uses less digits than its factorization.

1915565948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81301 (or 81299 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 53.

The square root of 1915565948 is about 43767.1788901227. The cubic root of 1915565948 is about 1241.9354850089.

The spelling of 1915565948 in words is "one billion, nine hundred fifteen million, five hundred sixty-five thousand, nine hundred forty-eight".