1157938394 has 8 divisors (see below), whose sum is σ = 1828323840. Its totient is φ = 548497116.

The previous prime is 1157938367. The next prime is 1157938399. The reversal of 1157938394 is 4938397511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1157938399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15235994 + ... + 15236069.

It is an arithmetic number, because the mean of its divisors is an integer number (228540480).

Almost surely, 2^1157938394 is an apocalyptic number.

1157938394 is a deficient number, since it is larger than the sum of its proper divisors (670385446).

1157938394 is a wasteful number, since it uses less digits than its factorization.

1157938394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30472084.

The product of its digits is 816480, while the sum is 50.

The square root of 1157938394 is about 34028.4938544156. The cubic root of 1157938394 is about 1050.0947439829.

The spelling of 1157938394 in words is "one billion, one hundred fifty-seven million, nine hundred thirty-eight thousand, three hundred ninety-four".