2156246453 has 2 divisors, whose sum is σ = 2156246454. Its totient is φ = 2156246452.

The previous prime is 2156246423. The next prime is 2156246467. The reversal of 2156246453 is 3546426512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1532096164 + 624150289 = 39142^2 + 24983^2 .

It is a cyclic number.

It is not a de Polignac number, because 2156246453 - 2¹⁸ = 2155984309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2156246413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078123226 + 1078123227.

It is an arithmetic number, because the mean of its divisors is an integer number (1078123227).

Almost surely, 2^2156246453 is an apocalyptic number.

It is an amenable number.

2156246453 is a deficient number, since it is larger than the sum of its proper divisors (1).

2156246453 is an equidigital number, since it uses as much as digits as its factorization.

2156246453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 38.

The square root of 2156246453 is about 46435.4008596889. The cubic root of 2156246453 is about 1291.9116046982.

The spelling of 2156246453 in words is "two billion, one hundred fifty-six million, two hundred forty-six thousand, four hundred fifty-three".