1252168969 has 2 divisors, whose sum is σ = 1252168970. Its totient is φ = 1252168968.

The previous prime is 1252168889. The next prime is 1252168997. The reversal of 1252168969 is 9698612521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1136498944 + 115670025 = 33712^2 + 10755^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252168969 - 2²¹ = 1250071817 is a prime.

It is a super-2 number, since 2×1252168969² = 3135854253853045922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1252168999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626084484 + 626084485.

It is an arithmetic number, because the mean of its divisors is an integer number (626084485).

Almost surely, 2^1252168969 is an apocalyptic number.

It is an amenable number.

1252168969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252168969 is an equidigital number, since it uses as much as digits as its factorization.

1252168969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 49.

The square root of 1252168969 is about 35385.9996184932. Note that the first 3 decimals coincide. The cubic root of 1252168969 is about 1077.8400386012.

The spelling of 1252168969 in words is "one billion, two hundred fifty-two million, one hundred sixty-eight thousand, nine hundred sixty-nine".