19375138 has 12 divisors (see below), whose sum is σ = 30873762. Its totient is φ = 9117440.

The previous prime is 19375123. The next prime is 19375151. The reversal of 19375138 is 83157391.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 18515809 + 859329 = 4303^2 + 927^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19375097 and 19375106.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16183 + ... + 17338.

Almost surely, 2^19375138 is an apocalyptic number.

19375138 is a deficient number, since it is larger than the sum of its proper divisors (11498624).

19375138 is a wasteful number, since it uses less digits than its factorization.

19375138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33557 (or 33540 counting only the distinct ones).

The product of its digits is 22680, while the sum is 37.

The square root of 19375138 is about 4401.7198911335. The cubic root of 19375138 is about 268.5849054168.

The spelling of 19375138 in words is "nineteen million, three hundred seventy-five thousand, one hundred thirty-eight".