1151606857 has 4 divisors (see below), whose sum is σ = 1152500176. Its totient is φ = 1150713540.

The previous prime is 1151606839. The next prime is 1151606873. The reversal of 1151606857 is 7586061511.

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 a de Polignac number, because none of the positive numbers 2^k-1151606857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151606887) 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, 444723 + ... + 447304.

It is an arithmetic number, because the mean of its divisors is an integer number (288125044).

Almost surely, 2^1151606857 is an apocalyptic number.

It is an amenable number.

1151606857 is a deficient number, since it is larger than the sum of its proper divisors (893319).

1151606857 is an equidigital number, since it uses as much as digits as its factorization.

1151606857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893318.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 1151606857 is about 33935.3334593901. Note that the first 3 decimals coincide. The cubic root of 1151606857 is about 1048.1772934055.

The spelling of 1151606857 in words is "one billion, one hundred fifty-one million, six hundred six thousand, eight hundred fifty-seven".