1157238206 has 12 divisors (see below), whose sum is σ = 1832027832. Its totient is φ = 548165124.

The previous prime is 1157238197. The next prime is 1157238211. The reversal of 1157238206 is 6028327511.

It is a happy number.

It is a congruent number.

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 in 5 ways as a sum of consecutive naturals, for example, 800690 + ... + 802133.

It is an arithmetic number, because the mean of its divisors is an integer number (152668986).

Almost surely, 2^1157238206 is an apocalyptic number.

1157238206 is a deficient number, since it is larger than the sum of its proper divisors (674789626).

1157238206 is a wasteful number, since it uses less digits than its factorization.

1157238206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602863 (or 1602844 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1157238206 is about 34018.2040384262. The cubic root of 1157238206 is about 1049.8830424528.

The spelling of 1157238206 in words is "one billion, one hundred fifty-seven million, two hundred thirty-eight thousand, two hundred six".