1890944814815 has 16 divisors (see below), whose sum is σ = 2593319070720. Its totient is φ = 1296636210720.

The previous prime is 1890944814797. The next prime is 1890944814821. The reversal of 1890944814815 is 5184184490981.

It is not a de Polignac number, because 1890944814815 - 2³² = 1886649847519 is a prime.

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, 5870810 + ... + 6184520.

It is an arithmetic number, because the mean of its divisors is an integer number (162082441920).

Almost surely, 2^{1890944814815} is an apocalyptic number.

1890944814815 is a deficient number, since it is larger than the sum of its proper divisors (702374255905).

1890944814815 is a wasteful number, since it uses less digits than its factorization.

1890944814815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485942.

The product of its (nonzero) digits is 13271040, while the sum is 62.

The spelling of 1890944814815 in words is "one trillion, eight hundred ninety billion, nine hundred forty-four million, eight hundred fourteen thousand, eight hundred fifteen".