1393424631 has 6 divisors (see below), whose sum is σ = 2012724480. Its totient is φ = 928949748.

The previous prime is 1393424621. The next prime is 1393424633. The reversal of 1393424631 is 1364243931.

1393424631 is a `hidden beast` number, since 13 + 9 + 3 + 4 + 2 + 4 + 631 = 666.

It is not a de Polignac number, because 1393424631 - 2¹⁰ = 1393423607 is a prime.

It is a super-2 number, since 2×1393424631² = 3883264404554972322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393424633) 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 in 5 ways as a sum of consecutive naturals, for example, 77412471 + ... + 77412488.

It is an arithmetic number, because the mean of its divisors is an integer number (335454080).

Almost surely, 2^1393424631 is an apocalyptic number.

1393424631 is a deficient number, since it is larger than the sum of its proper divisors (619299849).

1393424631 is a wasteful number, since it uses less digits than its factorization.

1393424631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154824965 (or 154824962 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 1393424631 is about 37328.6033893581. The cubic root of 1393424631 is about 1116.9348138201.

The spelling of 1393424631 in words is "one billion, three hundred ninety-three million, four hundred twenty-four thousand, six hundred thirty-one".