1355669631 has 12 divisors (see below), whose sum is σ = 1958746608. Its totient is φ = 903522624.

The previous prime is 1355669617. The next prime is 1355669659. The reversal of 1355669631 is 1369665531.

1355669631 is a `hidden beast` number, since 1 + 3 + 5 + 5 + 6 + 6 + 9 + 631 = 666.

It is not a de Polignac number, because 1355669631 - 2⁵ = 1355669599 is a prime.

It is a super-2 number, since 2×1355669631² = 3675680296831352322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355669671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15271 + ... + 54263.

It is an arithmetic number, because the mean of its divisors is an integer number (163228884).

Almost surely, 2^1355669631 is an apocalyptic number.

1355669631 is a deficient number, since it is larger than the sum of its proper divisors (603076977).

1355669631 is a wasteful number, since it uses less digits than its factorization.

1355669631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42862 (or 42859 counting only the distinct ones).

The product of its digits is 437400, while the sum is 45.

The square root of 1355669631 is about 36819.4192105199. The cubic root of 1355669631 is about 1106.7544812355.

The spelling of 1355669631 in words is "one billion, three hundred fifty-five million, six hundred sixty-nine thousand, six hundred thirty-one".