1650121156 has 12 divisors (see below), whose sum is σ = 2890124860. Its totient is φ = 824371200.

The previous prime is 1650121147. The next prime is 1650121189. The reversal of 1650121156 is 6511210561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 690112900 + 960008256 = 26270^2 + 30984^2 .

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, 166941 + ... + 176548.

Almost surely, 2^1650121156 is an apocalyptic number.

It is an amenable number.

1650121156 is a deficient number, since it is larger than the sum of its proper divisors (1240003704).

1650121156 is a wasteful number, since it uses less digits than its factorization.

1650121156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344694 (or 344692 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 1650121156 is about 40621.6833230727. The cubic root of 1650121156 is about 1181.6946721628.

The spelling of 1650121156 in words is "one billion, six hundred fifty million, one hundred twenty-one thousand, one hundred fifty-six".