1897123052388 has 24 divisors (see below), whose sum is σ = 4499188005760. Its totient is φ = 622007557920.

The previous prime is 1897123052329. The next prime is 1897123052399. The reversal of 1897123052388 is 8832503217981.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1295848348 + ... + 1295849811.

Almost surely, 2^{1897123052388} is an apocalyptic number.

It is an amenable number.

1897123052388 is an abundant number, since it is smaller than the sum of its proper divisors (2602064953372).

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

1897123052388 is a wasteful number, since it uses less digits than its factorization.

1897123052388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591698227 (or 2591698225 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 1897123052388 in words is "one trillion, eight hundred ninety-seven billion, one hundred twenty-three million, fifty-two thousand, three hundred eighty-eight".