2165329924 has 6 divisors (see below), whose sum is σ = 3789327374. Its totient is φ = 1082664960.

The previous prime is 2165329879. The next prime is 2165329961. The reversal of 2165329924 is 4299235612.

It can be written as a sum of positive squares in only one way, i.e., 2113057024 + 52272900 = 45968^2 + 7230^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270666237 + ... + 270666244.

Almost surely, 2^2165329924 is an apocalyptic number.

It is an amenable number.

2165329924 is a deficient number, since it is larger than the sum of its proper divisors (1623997450).

2165329924 is a wasteful number, since it uses less digits than its factorization.

2165329924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541332485 (or 541332483 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The square root of 2165329924 is about 46533.1056775711. The cubic root of 2165329924 is about 1293.7231789379.

The spelling of 2165329924 in words is "two billion, one hundred sixty-five million, three hundred twenty-nine thousand, nine hundred twenty-four".