1156169023 has 2 divisors, whose sum is σ = 1156169024. Its totient is φ = 1156169022.

The previous prime is 1156168961. The next prime is 1156169033. The reversal of 1156169023 is 3209616511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1156169023 - 2²⁹ = 619298111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1156169023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1156169033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578084511 + 578084512.

It is an arithmetic number, because the mean of its divisors is an integer number (578084512).

Almost surely, 2^1156169023 is an apocalyptic number.

1156169023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156169023 is an equidigital number, since it uses as much as digits as its factorization.

1156169023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 1156169023 is about 34002.4855415012. The cubic root of 1156169023 is about 1049.5596106321.

The spelling of 1156169023 in words is "one billion, one hundred fifty-six million, one hundred sixty-nine thousand, twenty-three".