1890278115320 has 128 divisors (see below), whose sum is σ = 4924106035200. Its totient is φ = 639649460736.

The previous prime is 1890278115311. The next prime is 1890278115343. The reversal of 1890278115320 is 235118720981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64199642 + ... + 64229078.

It is an arithmetic number, because the mean of its divisors is an integer number (38469578400).

Almost surely, 2^{1890278115320} is an apocalyptic number.

1890278115320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1890278115320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2462053017600).

1890278115320 is an abundant number, since it is smaller than the sum of its proper divisors (3033827919880).

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

1890278115320 is a wasteful number, since it uses less digits than its factorization.

1890278115320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32437 (or 32433 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 47.

The spelling of 1890278115320 in words is "one trillion, eight hundred ninety billion, two hundred seventy-eight million, one hundred fifteen thousand, three hundred twenty".