1157170620 has 48 divisors (see below), whose sum is σ = 3430673568. Its totient is φ = 290426880.

The previous prime is 1157170607. The next prime is 1157170621. The reversal of 1157170620 is 260717511.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157170621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566221 + ... + 568260.

It is an arithmetic number, because the mean of its divisors is an integer number (71472366).

Almost surely, 2^1157170620 is an apocalyptic number.

1157170620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157170620 is an abundant number, since it is smaller than the sum of its proper divisors (2273502948).

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

1157170620 is a wasteful number, since it uses less digits than its factorization.

1157170620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134510 (or 1134508 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 30.

The square root of 1157170620 is about 34017.2106440255. The cubic root of 1157170620 is about 1049.8626033371.

The spelling of 1157170620 in words is "one billion, one hundred fifty-seven million, one hundred seventy thousand, six hundred twenty".