1090806631 has 2 divisors, whose sum is σ = 1090806632. Its totient is φ = 1090806630.

The previous prime is 1090806617. The next prime is 1090806637. The reversal of 1090806631 is 1366080901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1090806631 - 2¹⁵ = 1090773863 is a prime.

It is a super-2 number, since 2×1090806631² = 2379718212467140322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1090806637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545403315 + 545403316.

It is an arithmetic number, because the mean of its divisors is an integer number (545403316).

Almost surely, 2^1090806631 is an apocalyptic number.

1090806631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090806631 is an equidigital number, since it uses as much as digits as its factorization.

1090806631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1090806631 is about 33027.3618534693. The cubic root of 1090806631 is about 1029.3962688730.

The spelling of 1090806631 in words is "one billion, ninety million, eight hundred six thousand, six hundred thirty-one".