1157420670 has 48 divisors (see below), whose sum is σ = 3231333648. Its totient is φ = 264552960.

The previous prime is 1157420669. The next prime is 1157420687. The reversal of 1157420670 is 760247511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 392211 + ... + 395150.

It is an arithmetic number, because the mean of its divisors is an integer number (67319451).

Almost surely, 2^1157420670 is an apocalyptic number.

1157420670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1157420670 is an abundant number, since it is smaller than the sum of its proper divisors (2073912978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1157420670 is a wasteful number, since it uses less digits than its factorization.

1157420670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787385 (or 787378 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 1157420670 is about 34020.8857909373. The cubic root of 1157420670 is about 1049.9382185871.

The spelling of 1157420670 in words is "one billion, one hundred fifty-seven million, four hundred twenty thousand, six hundred seventy".