1384437897631 has 12 divisors (see below), whose sum is σ = 1425225281800. Its totient is φ = 1344772618560.

The previous prime is 1384437897599. The next prime is 1384437897637. The reversal of 1384437897631 is 1367987344831.

It is a happy number.

It is not a de Polignac number, because 1384437897631 - 2⁵ = 1384437897599 is a prime.

It is a super-2 number, since 2×1384437897631² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384437897637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1413261 + ... + 2183158.

Almost surely, 2^{1384437897631} is an apocalyptic number.

1384437897631 is a deficient number, since it is larger than the sum of its proper divisors (40787384169).

1384437897631 is an equidigital number, since it uses as much as digits as its factorization.

1384437897631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3596730 (or 3596689 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 64.

The spelling of 1384437897631 in words is "one trillion, three hundred eighty-four billion, four hundred thirty-seven million, eight hundred ninety-seven thousand, six hundred thirty-one".