1889316456 has 32 divisors (see below), whose sum is σ = 4833137760. Its totient is φ = 615125952.

The previous prime is 1889316427. The next prime is 1889316469. The reversal of 1889316456 is 6546139881.

It is a junction number, because it is equal to n+sod(n) for n = 1889316399 and 1889316408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 914335 + ... + 916398.

It is an arithmetic number, because the mean of its divisors is an integer number (151035555).

Almost surely, 2^1889316456 is an apocalyptic number.

It is an amenable number.

1889316456 is an abundant number, since it is smaller than the sum of its proper divisors (2943821304).

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

1889316456 is a wasteful number, since it uses less digits than its factorization.

1889316456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830785 (or 1830781 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 51.

The square root of 1889316456 is about 43466.2680247569. The cubic root of 1889316456 is about 1236.2365201268.

The spelling of 1889316456 in words is "one billion, eight hundred eighty-nine million, three hundred sixteen thousand, four hundred fifty-six".