1157393420 has 12 divisors (see below), whose sum is σ = 2430526224. Its totient is φ = 462957360.

The previous prime is 1157393389. The next prime is 1157393429. The reversal of 1157393420 is 243937511.

It is not an unprimeable number, because it can be changed into a prime (1157393429) 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, 28934816 + ... + 28934855.

It is an arithmetic number, because the mean of its divisors is an integer number (202543852).

Almost surely, 2^1157393420 is an apocalyptic number.

1157393420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157393420 is an abundant number, since it is smaller than the sum of its proper divisors (1273132804).

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

1157393420 is a wasteful number, since it uses less digits than its factorization.

1157393420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57869680 (or 57869678 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 1157393420 is about 34020.4852993017. The cubic root of 1157393420 is about 1049.9299787017.

The spelling of 1157393420 in words is "one billion, one hundred fifty-seven million, three hundred ninety-three thousand, four hundred twenty".