2158935377 has 4 divisors (see below), whose sum is σ = 2163618996. Its totient is φ = 2154251760.

The previous prime is 2158935353. The next prime is 2158935409. The reversal of 2158935377 is 7735398512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1442784256 + 716151121 = 37984^2 + 26761^2 .

It is a cyclic number.

It is not a de Polignac number, because 2158935377 - 2⁶ = 2158935313 is a prime.

It is a super-2 number, since 2×2158935377² = 9322003924124264258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2158935307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2341118 + ... + 2342039.

It is an arithmetic number, because the mean of its divisors is an integer number (540904749).

Almost surely, 2^2158935377 is an apocalyptic number.

It is an amenable number.

2158935377 is a deficient number, since it is larger than the sum of its proper divisors (4683619).

2158935377 is an equidigital number, since it uses as much as digits as its factorization.

2158935377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4683618.

The product of its digits is 1587600, while the sum is 50.

The square root of 2158935377 is about 46464.3452229772. The cubic root of 2158935377 is about 1292.4484031247.

The spelling of 2158935377 in words is "two billion, one hundred fifty-eight million, nine hundred thirty-five thousand, three hundred seventy-seven".