19138372 has 12 divisors (see below), whose sum is σ = 36536976. Its totient is φ = 8699240.

The previous prime is 19138313. The next prime is 19138373. The reversal of 19138372 is 27383191.

It is not an unprimeable number, because it can be changed into a prime (19138373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217438 + ... + 217525.

It is an arithmetic number, because the mean of its divisors is an integer number (3044748).

Almost surely, 2^19138372 is an apocalyptic number.

It is an amenable number.

19138372 is a deficient number, since it is larger than the sum of its proper divisors (17398604).

19138372 is a wasteful number, since it uses less digits than its factorization.

19138372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434978 (or 434976 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 19138372 is about 4374.7425067083. The cubic root of 19138372 is about 267.4863742441.

The spelling of 19138372 in words is "nineteen million, one hundred thirty-eight thousand, three hundred seventy-two".