2158104737 has 4 divisors (see below), whose sum is σ = 2158583700. Its totient is φ = 2157625776.

The previous prime is 2158104731. The next prime is 2158104749. The reversal of 2158104737 is 7374018512.

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 1346082721 + 812022016 = 36689^2 + 28496^2 .

It is a cyclic number.

It is not a de Polignac number, because 2158104737 - 2¹⁰ = 2158103713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2158104737.

It is not an unprimeable number, because it can be changed into a prime (2158104731) 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, 232658 + ... + 241755.

It is an arithmetic number, because the mean of its divisors is an integer number (539645925).

Almost surely, 2^2158104737 is an apocalyptic number.

It is an amenable number.

2158104737 is a deficient number, since it is larger than the sum of its proper divisors (478963).

2158104737 is an equidigital number, since it uses as much as digits as its factorization.

2158104737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478962.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 2158104737 is about 46455.4058964078. The cubic root of 2158104737 is about 1292.2826274273.

The spelling of 2158104737 in words is "two billion, one hundred fifty-eight million, one hundred four thousand, seven hundred thirty-seven".