1136857979 has 2 divisors, whose sum is σ = 1136857980. Its totient is φ = 1136857978.

The previous prime is 1136857877. The next prime is 1136857993. The reversal of 1136857979 is 9797586311.

It is a strong prime.

It is an emirp because it is prime and its reverse (9797586311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1136857979 - 2¹⁶ = 1136792443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1136857999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568428989 + 568428990.

It is an arithmetic number, because the mean of its divisors is an integer number (568428990).

Almost surely, 2^1136857979 is an apocalyptic number.

1136857979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1136857979 is an equidigital number, since it uses as much as digits as its factorization.

1136857979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2857680, while the sum is 56.

The square root of 1136857979 is about 33717.3246121337. The cubic root of 1136857979 is about 1043.6833089017.

The spelling of 1136857979 in words is "one billion, one hundred thirty-six million, eight hundred fifty-seven thousand, nine hundred seventy-nine".