1890290064 has 80 divisors (see below), whose sum is σ = 5440276800. Its totient is φ = 561566208.

The previous prime is 1890290023. The next prime is 1890290071. The reversal of 1890290064 is 4600920981.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 34134 + ... + 70325.

It is an arithmetic number, because the mean of its divisors is an integer number (68003460).

Almost surely, 2^1890290064 is an apocalyptic number.

It is an amenable number.

1890290064 is an abundant number, since it is smaller than the sum of its proper divisors (3549986736).

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

1890290064 is a wasteful number, since it uses less digits than its factorization.

1890290064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104512 (or 104506 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 1890290064 is about 43477.4661635197. The cubic root of 1890290064 is about 1236.4488373155.

The spelling of 1890290064 in words is "one billion, eight hundred ninety million, two hundred ninety thousand, sixty-four".