1157386434 has 16 divisors (see below), whose sum is σ = 2327706720. Its totient is φ = 383639840.

The previous prime is 1157386429. The next prime is 1157386459. The reversal of 1157386434 is 4346837511.

It is a happy number.

It is a super-4 number, since 4×1157386434⁴ (a number of 37 digits) contains 4444 as substring.

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 7 ways as a sum of consecutive naturals, for example, 537747 + ... + 539894.

It is an arithmetic number, because the mean of its divisors is an integer number (145481670).

Almost surely, 2^1157386434 is an apocalyptic number.

1157386434 is an abundant number, since it is smaller than the sum of its proper divisors (1170320286).

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

1157386434 is a wasteful number, since it uses less digits than its factorization.

1157386434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077825.

The product of its digits is 241920, while the sum is 42.

The square root of 1157386434 is about 34020.3826257142. The cubic root of 1157386434 is about 1049.9278662464.

The spelling of 1157386434 in words is "one billion, one hundred fifty-seven million, three hundred eighty-six thousand, four hundred thirty-four".