1253460157 has 2 divisors, whose sum is σ = 1253460158. Its totient is φ = 1253460156.

The previous prime is 1253460139. The next prime is 1253460193. The reversal of 1253460157 is 7510643521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1239814521 + 13645636 = 35211^2 + 3694^2 .

It is an emirp because it is prime and its reverse (7510643521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1253460157 - 2¹⁹ = 1252935869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1253460557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626730078 + 626730079.

It is an arithmetic number, because the mean of its divisors is an integer number (626730079).

Almost surely, 2^1253460157 is an apocalyptic number.

It is an amenable number.

1253460157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253460157 is an equidigital number, since it uses as much as digits as its factorization.

1253460157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 1253460157 is about 35404.2392518184. The cubic root of 1253460157 is about 1078.2103869271.

The spelling of 1253460157 in words is "one billion, two hundred fifty-three million, four hundred sixty thousand, one hundred fifty-seven".