19138344 has 32 divisors (see below), whose sum is σ = 48171840. Its totient is φ = 6336000.

The previous prime is 19138313. The next prime is 19138373. The reversal of 19138344 is 44383191.

It is a super-2 number, since 2×19138344² = 732552422124672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 984 + ... + 6264.

It is an arithmetic number, because the mean of its divisors is an integer number (1505370).

Almost surely, 2^19138344 is an apocalyptic number.

It is an amenable number.

19138344 is an abundant number, since it is smaller than the sum of its proper divisors (29033496).

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

19138344 is a wasteful number, since it uses less digits than its factorization.

19138344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5441 (or 5437 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 19138344 is about 4374.7393065187. The cubic root of 19138344 is about 267.4862437972.

The spelling of 19138344 in words is "nineteen million, one hundred thirty-eight thousand, three hundred forty-four".