1890086904 has 48 divisors (see below), whose sum is σ = 5171777520. Its totient is φ = 623531520.

The previous prime is 1890086899. The next prime is 1890086909. The reversal of 1890086904 is 4096800981.

It is an interprime number because it is at equal distance from previous prime (1890086899) and next prime (1890086909).

It is a self number, because there is not a number n which added to its sum of digits gives 1890086904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890086909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128332 + ... + 142299.

It is an arithmetic number, because the mean of its divisors is an integer number (107745365).

Almost surely, 2^1890086904 is an apocalyptic number.

It is an amenable number.

1890086904 is an abundant number, since it is smaller than the sum of its proper divisors (3281690616).

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

1890086904 is a wasteful number, since it uses less digits than its factorization.

1890086904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270740 (or 270733 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1890086904 is about 43475.1297180353. The cubic root of 1890086904 is about 1236.4045397144.

The spelling of 1890086904 in words is "one billion, eight hundred ninety million, eighty-six thousand, nine hundred four".