1938484745564 has 6 divisors (see below), whose sum is σ = 3392348304744. Its totient is φ = 969242372780.

The previous prime is 1938484745551. The next prime is 1938484745609. The reversal of 1938484745564 is 4655474848391.

It is a junction number, because it is equal to n+sod(n) for n = 1938484745494 and 1938484745503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242310593192 + ... + 242310593199.

It is an arithmetic number, because the mean of its divisors is an integer number (565391384124).

Almost surely, 2^{1938484745564} is an apocalyptic number.

It is an amenable number.

1938484745564 is a deficient number, since it is larger than the sum of its proper divisors (1453863559180).

1938484745564 is a wasteful number, since it uses less digits than its factorization.

1938484745564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484621186395 (or 484621186393 counting only the distinct ones).

The product of its digits is 464486400, while the sum is 68.

The spelling of 1938484745564 in words is "one trillion, nine hundred thirty-eight billion, four hundred eighty-four million, seven hundred forty-five thousand, five hundred sixty-four".