1156633631 has 2 divisors, whose sum is σ = 1156633632. Its totient is φ = 1156633630.

The previous prime is 1156633613. The next prime is 1156633633. The reversal of 1156633631 is 1363366511.

Together with previous prime (1156633613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1156633631 - 2⁶ = 1156633567 is a prime.

It is a super-2 number, since 2×1156633631² = 2675602712720488322, which contains 22 as substring.

Together with 1156633633, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1156633591 and 1156633600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1156633633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578316815 + 578316816.

It is an arithmetic number, because the mean of its divisors is an integer number (578316816).

Almost surely, 2^1156633631 is an apocalyptic number.

1156633631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156633631 is an equidigital number, since it uses as much as digits as its factorization.

1156633631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 35.

The square root of 1156633631 is about 34009.3168264227. The cubic root of 1156633631 is about 1049.7001807614.

The spelling of 1156633631 in words is "one billion, one hundred fifty-six million, six hundred thirty-three thousand, six hundred thirty-one".