1157015386 has 4 divisors (see below), whose sum is σ = 1735523082. Its totient is φ = 578507692.

The previous prime is 1157015371. The next prime is 1157015413. The reversal of 1157015386 is 6835107511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6835107511 = 2221 ⋅3077491.

It can be written as a sum of positive squares in only one way, i.e., 777350161 + 379665225 = 27881^2 + 19485^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289253845 + ... + 289253848.

Almost surely, 2^1157015386 is an apocalyptic number.

1157015386 is a deficient number, since it is larger than the sum of its proper divisors (578507696).

1157015386 is an equidigital number, since it uses as much as digits as its factorization.

1157015386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578507695.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 1157015386 is about 34014.9288695420. The cubic root of 1157015386 is about 1049.8156550142.

The spelling of 1157015386 in words is "one billion, one hundred fifty-seven million, fifteen thousand, three hundred eighty-six".