4165213256 has 8 divisors (see below), whose sum is σ = 7809774870. Its totient is φ = 2082606624.

The previous prime is 4165213253. The next prime is 4165213277. The reversal of 4165213256 is 6523125614.

It can be written as a sum of positive squares in only one way, i.e., 2723796100 + 1441417156 = 52190^2 + 37966^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (4165213253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260325821 + ... + 260325836.

Almost surely, 2^4165213256 is an apocalyptic number.

It is an amenable number.

4165213256 is a deficient number, since it is larger than the sum of its proper divisors (3644561614).

4165213256 is a wasteful number, since it uses less digits than its factorization.

4165213256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520651663 (or 520651659 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 4165213256 is about 64538.4633842486. The cubic root of 4165213256 is about 1608.9618522411.

The spelling of 4165213256 in words is "four billion, one hundred sixty-five million, two hundred thirteen thousand, two hundred fifty-six".