1461868256 has 24 divisors (see below), whose sum is σ = 2886614640. Its totient is φ = 728759808.

The previous prime is 1461868237. The next prime is 1461868259. The reversal of 1461868256 is 6528681641.

It is a self number, because there is not a number n which added to its sum of digits gives 1461868256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1461868259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56996 + ... + 78563.

It is an arithmetic number, because the mean of its divisors is an integer number (120275610).

Almost surely, 2^1461868256 is an apocalyptic number.

1461868256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1461868256 is a deficient number, since it is larger than the sum of its proper divisors (1424746384).

1461868256 is a wasteful number, since it uses less digits than its factorization.

1461868256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135906 (or 135898 counting only the distinct ones).

The product of its digits is 552960, while the sum is 47.

The square root of 1461868256 is about 38234.3857803418. The cubic root of 1461868256 is about 1134.9308776887.

The spelling of 1461868256 in words is "one billion, four hundred sixty-one million, eight hundred sixty-eight thousand, two hundred fifty-six".