2154313957 has 2 divisors, whose sum is σ = 2154313958. Its totient is φ = 2154313956.

The previous prime is 2154313927. The next prime is 2154313979. The reversal of 2154313957 is 7593134512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2145635041 + 8678916 = 46321^2 + 2946^2 .

It is a cyclic number.

It is not a de Polignac number, because 2154313957 - 2¹⁵ = 2154281189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2154313927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077156978 + 1077156979.

It is an arithmetic number, because the mean of its divisors is an integer number (1077156979).

Almost surely, 2^2154313957 is an apocalyptic number.

It is an amenable number.

2154313957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154313957 is an equidigital number, since it uses as much as digits as its factorization.

2154313957 is an evil number, because the sum of its binary digits is even.

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

The square root of 2154313957 is about 46414.5877607461. The cubic root of 2154313957 is about 1291.5255387138.

The spelling of 2154313957 in words is "two billion, one hundred fifty-four million, three hundred thirteen thousand, nine hundred fifty-seven".