1381432456 has 16 divisors (see below), whose sum is σ = 2591827740. Its totient is φ = 690278400.

The previous prime is 1381432441. The next prime is 1381432477. The reversal of 1381432456 is 6542341831.

It can be written as a sum of positive squares in 2 ways, for example, as 1286369956 + 95062500 = 35866^2 + 9750^2 .

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, 41121 + ... + 66736.

Almost surely, 2^1381432456 is an apocalyptic number.

It is an amenable number.

1381432456 is a deficient number, since it is larger than the sum of its proper divisors (1210395284).

1381432456 is a wasteful number, since it uses less digits than its factorization.

1381432456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109464 (or 109460 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 1381432456 is about 37167.6264509855. The cubic root of 1381432456 is about 1113.7213669668.

The spelling of 1381432456 in words is "one billion, three hundred eighty-one million, four hundred thirty-two thousand, four hundred fifty-six".