1407431636 has 12 divisors (see below), whose sum is σ = 2652467412. Its totient is φ = 649583808.

The previous prime is 1407431609. The next prime is 1407431657. The reversal of 1407431636 is 6361347041.

It can be written as a sum of positive squares in 2 ways, for example, as 294808900 + 1112622736 = 17170^2 + 33356^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1407431596 and 1407431605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13532945 + ... + 13533048.

It is an arithmetic number, because the mean of its divisors is an integer number (221038951).

Almost surely, 2^1407431636 is an apocalyptic number.

It is an amenable number.

1407431636 is a deficient number, since it is larger than the sum of its proper divisors (1245035776).

1407431636 is a wasteful number, since it uses less digits than its factorization.

1407431636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27066010 (or 27066008 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 1407431636 is about 37515.7518383945. The cubic root of 1407431636 is about 1120.6648996276.

Adding to 1407431636 its reverse (6361347041), we get a palindrome (7768778677).

The spelling of 1407431636 in words is "one billion, four hundred seven million, four hundred thirty-one thousand, six hundred thirty-six".