1381035456 has 42 divisors (see below), whose sum is σ = 3958490432. Its totient is φ = 460344960.

The previous prime is 1381035421. The next prime is 1381035457. The reversal of 1381035456 is 6545301831.

1381035456 is a `hidden beast` number, since 1 + 3 + 8 + 103 + 545 + 6 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1381035456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381035457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1198240 + ... + 1199391.

Almost surely, 2^1381035456 is an apocalyptic number.

1381035456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1381035456 is an abundant number, since it is smaller than the sum of its proper divisors (2577454976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1381035456 is a wasteful number, since it uses less digits than its factorization.

1381035456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397649 (or 2397636 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1381035456 is about 37162.2853979677. The cubic root of 1381035456 is about 1113.6146686038.

The spelling of 1381035456 in words is "one billion, three hundred eighty-one million, thirty-five thousand, four hundred fifty-six".