1152557538 has 32 divisors (see below), whose sum is σ = 2526619392. Its totient is φ = 347600400.

The previous prime is 1152557521. The next prime is 1152557543. The reversal of 1152557538 is 8357552511.

It is a self number, because there is not a number n which added to its sum of digits gives 1152557538.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27456 + ... + 55307.

It is an arithmetic number, because the mean of its divisors is an integer number (78956856).

Almost surely, 2^1152557538 is an apocalyptic number.

1152557538 is an abundant number, since it is smaller than the sum of its proper divisors (1374061854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1152557538 is a wasteful number, since it uses less digits than its factorization.

1152557538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82990.

The product of its digits is 210000, while the sum is 42.

The square root of 1152557538 is about 33949.3378138661. The cubic root of 1152557538 is about 1048.4656464865.

The spelling of 1152557538 in words is "one billion, one hundred fifty-two million, five hundred fifty-seven thousand, five hundred thirty-eight".