1157494849 has 12 divisors (see below), whose sum is σ = 1382871616. Its totient is φ = 948998952.

The previous prime is 1157494841. The next prime is 1157494853. The reversal of 1157494849 is 9484947511.

It is not a de Polignac number, because 1157494849 - 2³ = 1157494841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1157494796 and 1157494805.

It is not an unprimeable number, because it can be changed into a prime (1157494841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152589 + ... + 159994.

Almost surely, 2^1157494849 is an apocalyptic number.

It is an amenable number.

1157494849 is a deficient number, since it is larger than the sum of its proper divisors (225376767).

1157494849 is an equidigital number, since it uses as much as digits as its factorization.

1157494849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312636 (or 312613 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 52.

The square root of 1157494849 is about 34021.9759714218. The cubic root of 1157494849 is about 1049.9606482606.

The spelling of 1157494849 in words is "one billion, one hundred fifty-seven million, four hundred ninety-four thousand, eight hundred forty-nine".