1254453149 has 2 divisors, whose sum is σ = 1254453150. Its totient is φ = 1254453148.

The previous prime is 1254453139. The next prime is 1254453163. The reversal of 1254453149 is 9413544521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 913127524 + 341325625 = 30218^2 + 18475^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254453149 - 2⁴ = 1254453133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254453139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627226574 + 627226575.

It is an arithmetic number, because the mean of its divisors is an integer number (627226575).

Almost surely, 2^1254453149 is an apocalyptic number.

It is an amenable number.

1254453149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254453149 is an equidigital number, since it uses as much as digits as its factorization.

1254453149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 38.

The square root of 1254453149 is about 35418.2601068997. The cubic root of 1254453149 is about 1078.4950314456.

The spelling of 1254453149 in words is "one billion, two hundred fifty-four million, four hundred fifty-three thousand, one hundred forty-nine".