1157997274 has 8 divisors (see below), whose sum is σ = 1985138208. Its totient is φ = 496284540.

The previous prime is 1157997227. The next prime is 1157997287. The reversal of 1157997274 is 4727997511.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41357032 + ... + 41357059.

It is an arithmetic number, because the mean of its divisors is an integer number (248142276).

Almost surely, 2^1157997274 is an apocalyptic number.

1157997274 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1157997274 is a deficient number, since it is larger than the sum of its proper divisors (827140934).

1157997274 is an equidigital number, since it uses as much as digits as its factorization.

1157997274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82714100.

The product of its digits is 1111320, while the sum is 52.

The square root of 1157997274 is about 34029.3590007217. The cubic root of 1157997274 is about 1050.1125424343.

The spelling of 1157997274 in words is "one billion, one hundred fifty-seven million, nine hundred ninety-seven thousand, two hundred seventy-four".