1170128357 has 4 divisors (see below), whose sum is σ = 1231714080. Its totient is φ = 1108542636.

The previous prime is 1170128347. The next prime is 1170128383. The reversal of 1170128357 is 7538210711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1170128357 - 2¹⁴ = 1170111973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1170128327) 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, 30792833 + ... + 30792870.

It is an arithmetic number, because the mean of its divisors is an integer number (307928520).

Almost surely, 2^1170128357 is an apocalyptic number.

It is an amenable number.

1170128357 is a deficient number, since it is larger than the sum of its proper divisors (61585723).

1170128357 is an equidigital number, since it uses as much as digits as its factorization.

1170128357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61585722.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 1170128357 is about 34207.1389771200. The cubic root of 1170128357 is about 1053.7667753517.

The spelling of 1170128357 in words is "one billion, one hundred seventy million, one hundred twenty-eight thousand, three hundred fifty-seven".