1156700161 has 2 divisors, whose sum is σ = 1156700162. Its totient is φ = 1156700160.

The previous prime is 1156700113. The next prime is 1156700173. The reversal of 1156700161 is 1610076511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 961930225 + 194769936 = 31015^2 + 13956^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1156700161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1156700191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578350080 + 578350081.

It is an arithmetic number, because the mean of its divisors is an integer number (578350081).

Almost surely, 2^1156700161 is an apocalyptic number.

It is an amenable number.

1156700161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156700161 is an equidigital number, since it uses as much as digits as its factorization.

1156700161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 1156700161 is about 34010.2949266836. The cubic root of 1156700161 is about 1049.7203067582.

Adding to 1156700161 its reverse (1610076511), we get a palindrome (2766776672).

The spelling of 1156700161 in words is "one billion, one hundred fifty-six million, seven hundred thousand, one hundred sixty-one".