5642394165 has 72 divisors (see below), whose sum is σ = 10273296384. Its totient is φ = 2861827200.

The previous prime is 5642394127. The next prime is 5642394181. The reversal of 5642394165 is 5614932465.

5642394165 is a `hidden beast` number, since 564 + 23 + 9 + 4 + 1 + 65 = 666.

It is not a de Polignac number, because 5642394165 - 2⁶ = 5642394101 is a prime.

It is a super-2 number, since 2×5642394165² = 63673223826452094450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5642394165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5190252 + ... + 5191338.

It is an arithmetic number, because the mean of its divisors is an integer number (142684672).

Almost surely, 2^5642394165 is an apocalyptic number.

It is an amenable number.

5642394165 is a deficient number, since it is larger than the sum of its proper divisors (4630902219).

5642394165 is a wasteful number, since it uses less digits than its factorization.

5642394165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251 (or 1187 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 5642394165 is about 75115.8715918280. The cubic root of 5642394165 is about 1780.2779270819.

The spelling of 5642394165 in words is "five billion, six hundred forty-two million, three hundred ninety-four thousand, one hundred sixty-five".