2157360473 has 2 divisors, whose sum is σ = 2157360474. Its totient is φ = 2157360472.

The previous prime is 2157360451. The next prime is 2157360479. The reversal of 2157360473 is 3740637512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2148137104 + 9223369 = 46348^2 + 3037^2 .

It is a cyclic number.

It is not a de Polignac number, because 2157360473 - 2²⁰ = 2156311897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2157360479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078680236 + 1078680237.

It is an arithmetic number, because the mean of its divisors is an integer number (1078680237).

Almost surely, 2^2157360473 is an apocalyptic number.

It is an amenable number.

2157360473 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157360473 is an equidigital number, since it uses as much as digits as its factorization.

2157360473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 2157360473 is about 46447.3946847399. The cubic root of 2157360473 is about 1292.1340541588.

Adding to 2157360473 its reverse (3740637512), we get a palindrome (5897997985).

The spelling of 2157360473 in words is "two billion, one hundred fifty-seven million, three hundred sixty thousand, four hundred seventy-three".