1157249938 has 16 divisors (see below), whose sum is σ = 1880216856. Its totient is φ = 531025920.

The previous prime is 1157249923. The next prime is 1157249941. The reversal of 1157249938 is 8399427511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 801059809 + 356190129 = 28303^2 + 18873^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1157249891 and 1157249900.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124143 + ... + 133138.

Almost surely, 2^1157249938 is an apocalyptic number.

1157249938 is a deficient number, since it is larger than the sum of its proper divisors (722966918).

1157249938 is a wasteful number, since it uses less digits than its factorization.

1157249938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257469.

The product of its digits is 544320, while the sum is 49.

The square root of 1157249938 is about 34018.3764750759. The cubic root of 1157249938 is about 1049.8865903211.

The spelling of 1157249938 in words is "one billion, one hundred fifty-seven million, two hundred forty-nine thousand, nine hundred thirty-eight".