1816957952 has 22 divisors (see below), whose sum is σ = 3632143578. Its totient is φ = 908478464.

The previous prime is 1816957907. The next prime is 1816957981. The reversal of 1816957952 is 2597596181.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1778814976 + 38142976 = 42176^2 + 6176^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1816957894 and 1816957903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 886163 + ... + 888210.

Almost surely, 2^1816957952 is an apocalyptic number.

It is an amenable number.

1816957952 is a deficient number, since it is larger than the sum of its proper divisors (1815185626).

1816957952 is an equidigital number, since it uses as much as digits as its factorization.

1816957952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774393 (or 1774375 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 53.

The square root of 1816957952 is about 42625.7897522146. The cubic root of 1816957952 is about 1220.2485277078.

The spelling of 1816957952 in words is "one billion, eight hundred sixteen million, nine hundred fifty-seven thousand, nine hundred fifty-two".