2130973157 has 4 divisors (see below), whose sum is σ = 2204455020. Its totient is φ = 2057491296.

The previous prime is 2130973133. The next prime is 2130973193. The reversal of 2130973157 is 7513790312.

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 802079041 + 1328894116 = 28321^2 + 36454^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130973157 - 2⁶ = 2130973093 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 2130973157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130973127) 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, 36740888 + ... + 36740945.

It is an arithmetic number, because the mean of its divisors is an integer number (551113755).

Almost surely, 2^2130973157 is an apocalyptic number.

It is an amenable number.

2130973157 is a deficient number, since it is larger than the sum of its proper divisors (73481863).

2130973157 is an equidigital number, since it uses as much as digits as its factorization.

2130973157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73481862.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 2130973157 is about 46162.4648063771. The cubic root of 2130973157 is about 1286.8442698793.

The spelling of 2130973157 in words is "two billion, one hundred thirty million, nine hundred seventy-three thousand, one hundred fifty-seven".