1158371551 has 16 divisors (see below), whose sum is σ = 1252783584. Its totient is φ = 1066983424.

The previous prime is 1158371521. The next prime is 1158371567. The reversal of 1158371551 is 1551738511.

It is a cyclic number.

It is not a de Polignac number, because 1158371551 - 2²⁹ = 621500639 is a prime.

It is a super-2 number, since 2×1158371551² = 2683649300332291202, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1158371551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158371521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419391 + ... + 422143.

It is an arithmetic number, because the mean of its divisors is an integer number (78298974).

Almost surely, 2^1158371551 is an apocalyptic number.

1158371551 is a deficient number, since it is larger than the sum of its proper divisors (94412033).

1158371551 is a wasteful number, since it uses less digits than its factorization.

1158371551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290.

The product of its digits is 21000, while the sum is 37.

The square root of 1158371551 is about 34034.8578812958. The cubic root of 1158371551 is about 1050.2256660844.

The spelling of 1158371551 in words is "one billion, one hundred fifty-eight million, three hundred seventy-one thousand, five hundred fifty-one".