1158598957 has 2 divisors, whose sum is σ = 1158598958. Its totient is φ = 1158598956.

The previous prime is 1158598949. The next prime is 1158598979. The reversal of 1158598957 is 7598958511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1095014281 + 63584676 = 33091^2 + 7974^2 .

It is a cyclic number.

It is not a de Polignac number, because 1158598957 - 2³ = 1158598949 is a prime.

It is a super-2 number, since 2×1158598957² = 2684703086322975698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1158598937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579299478 + 579299479.

It is an arithmetic number, because the mean of its divisors is an integer number (579299479).

Almost surely, 2^1158598957 is an apocalyptic number.

It is an amenable number.

1158598957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158598957 is an equidigital number, since it uses as much as digits as its factorization.

1158598957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536000, while the sum is 58.

The square root of 1158598957 is about 34038.1984981579. The cubic root of 1158598957 is about 1050.2943866922.

The spelling of 1158598957 in words is "one billion, one hundred fifty-eight million, five hundred ninety-eight thousand, nine hundred fifty-seven".