1894400886 has 32 divisors (see below), whose sum is σ = 4469741568. Its totient is φ = 523797120.

The previous prime is 1894400873. The next prime is 1894400891. The reversal of 1894400886 is 6880044981.

1894400886 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 726195 + ... + 728798.

It is an arithmetic number, because the mean of its divisors is an integer number (139679424).

Almost surely, 2^1894400886 is an apocalyptic number.

1894400886 is an abundant number, since it is smaller than the sum of its proper divisors (2575340682).

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

1894400886 is a wasteful number, since it uses less digits than its factorization.

1894400886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455036.

The product of its (nonzero) digits is 442368, while the sum is 48.

The square root of 1894400886 is about 43524.7158060797. The cubic root of 1894400886 is about 1237.3444919172.

The spelling of 1894400886 in words is "one billion, eight hundred ninety-four million, four hundred thousand, eight hundred eighty-six".