1938762694445 has 4 divisors (see below), whose sum is σ = 2326515233340. Its totient is φ = 1551010155552.

The previous prime is 1938762694361. The next prime is 1938762694457. The reversal of 1938762694445 is 5444962678391.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1178312421001 + 760450273444 = 1085501^2 + 872038^2 .

It is a cyclic number.

It is not a de Polignac number, because 1938762694445 - 2⁸ = 1938762694189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193876269440 + ... + 193876269449.

It is an arithmetic number, because the mean of its divisors is an integer number (581628808335).

Almost surely, 2^{1938762694445} is an apocalyptic number.

It is an amenable number.

1938762694445 is a deficient number, since it is larger than the sum of its proper divisors (387752538895).

1938762694445 is an equidigital number, since it uses as much as digits as its factorization.

1938762694445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387752538894.

The product of its digits is 313528320, while the sum is 68.

The spelling of 1938762694445 in words is "one trillion, nine hundred thirty-eight billion, seven hundred sixty-two million, six hundred ninety-four thousand, four hundred forty-five".