1090156631 has 2 divisors, whose sum is σ = 1090156632. Its totient is φ = 1090156630.

The previous prime is 1090156621. The next prime is 1090156643. The reversal of 1090156631 is 1366510901.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1090156631 is a prime.

It is a super-2 number, since 2×1090156631² = 2376882960226540322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1090156621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545078315 + 545078316.

It is an arithmetic number, because the mean of its divisors is an integer number (545078316).

Almost surely, 2^1090156631 is an apocalyptic number.

1090156631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090156631 is an equidigital number, since it uses as much as digits as its factorization.

1090156631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 1090156631 is about 33017.5200613250. The cubic root of 1090156631 is about 1029.1917595052.

The spelling of 1090156631 in words is "one billion, ninety million, one hundred fifty-six thousand, six hundred thirty-one".