1157351380 has 36 divisors (see below), whose sum is σ = 2442654900. Its totient is φ = 460622848.

The previous prime is 1157351369. The next prime is 1157351383. The reversal of 1157351380 is 831537511.

It can be written as a sum of positive squares in 2 ways, for example, as 561405636 + 595945744 = 23694^2 + 24412^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157351383) 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, 2577396 + ... + 2577844.

It is an arithmetic number, because the mean of its divisors is an integer number (67851525).

Almost surely, 2^1157351380 is an apocalyptic number.

1157351380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157351380 is an abundant number, since it is smaller than the sum of its proper divisors (1285303520).

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

1157351380 is an equidigital number, since it uses as much as digits as its factorization.

1157351380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176 (or 815 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 1157351380 is about 34019.8674306647. The cubic root of 1157351380 is about 1049.9172663460.

Adding to 1157351380 its reverse (831537511), we get a palindrome (1988888891).

The spelling of 1157351380 in words is "one billion, one hundred fifty-seven million, three hundred fifty-one thousand, three hundred eighty".