2156902357 has 2 divisors, whose sum is σ = 2156902358. Its totient is φ = 2156902356.

The previous prime is 2156902277. The next prime is 2156902373. The reversal of 2156902357 is 7532096512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1867017681 + 289884676 = 43209^2 + 17026^2 .

It is a cyclic number.

It is not a de Polignac number, because 2156902357 - 2⁷ = 2156902229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2156902157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078451178 + 1078451179.

It is an arithmetic number, because the mean of its divisors is an integer number (1078451179).

Almost surely, 2^2156902357 is an apocalyptic number.

It is an amenable number.

2156902357 is a deficient number, since it is larger than the sum of its proper divisors (1).

2156902357 is an equidigital number, since it uses as much as digits as its factorization.

2156902357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 2156902357 is about 46442.4628653563. The cubic root of 2156902357 is about 1292.0425860280.

Adding to 2156902357 its reverse (7532096512), we get a palindrome (9688998869).

The spelling of 2156902357 in words is "two billion, one hundred fifty-six million, nine hundred two thousand, three hundred fifty-seven".