1157149738 has 8 divisors (see below), whose sum is σ = 1735964640. Its totient is φ = 578494860.

The previous prime is 1157149733. The next prime is 1157149739. The reversal of 1157149738 is 8379417511.

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

It is not an unprimeable number, because it can be changed into a prime (1157149733) 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, 19908 + ... + 52063.

It is an arithmetic number, because the mean of its divisors is an integer number (216995580).

Almost surely, 2^1157149738 is an apocalyptic number.

1157149738 is a deficient number, since it is larger than the sum of its proper divisors (578814902).

1157149738 is an equidigital number, since it uses as much as digits as its factorization.

1157149738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80012.

The product of its digits is 211680, while the sum is 46.

The square root of 1157149738 is about 34016.9037097735. The cubic root of 1157149738 is about 1049.8562881166.

The spelling of 1157149738 in words is "one billion, one hundred fifty-seven million, one hundred forty-nine thousand, seven hundred thirty-eight".