1164242557 has 2 divisors, whose sum is σ = 1164242558. Its totient is φ = 1164242556.

The previous prime is 1164242549. The next prime is 1164242561. The reversal of 1164242557 is 7552424611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1085636601 + 78605956 = 32949^2 + 8866^2 .

It is a cyclic number.

It is not a de Polignac number, because 1164242557 - 2³ = 1164242549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1164242567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582121278 + 582121279.

It is an arithmetic number, because the mean of its divisors is an integer number (582121279).

Almost surely, 2^1164242557 is an apocalyptic number.

It is an amenable number.

1164242557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1164242557 is an equidigital number, since it uses as much as digits as its factorization.

1164242557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 37.

The square root of 1164242557 is about 34120.9987690865. The cubic root of 1164242557 is about 1051.9969726838.

The spelling of 1164242557 in words is "one billion, one hundred sixty-four million, two hundred forty-two thousand, five hundred fifty-seven".