2156370539 has 2 divisors, whose sum is σ = 2156370540. Its totient is φ = 2156370538.

The previous prime is 2156370499. The next prime is 2156370563. The reversal of 2156370539 is 9350736512.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2156370539 - 2²⁸ = 1887935083 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2156370496 and 2156370505.

It is not a weakly prime, because it can be changed into another prime (2156370599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078185269 + 1078185270.

It is an arithmetic number, because the mean of its divisors is an integer number (1078185270).

Almost surely, 2^2156370539 is an apocalyptic number.

2156370539 is a deficient number, since it is larger than the sum of its proper divisors (1).

2156370539 is an equidigital number, since it uses as much as digits as its factorization.

2156370539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170100, while the sum is 41.

The square root of 2156370539 is about 46436.7369547000. The cubic root of 2156370539 is about 1291.9363861988.

The spelling of 2156370539 in words is "two billion, one hundred fifty-six million, three hundred seventy thousand, five hundred thirty-nine".