19138452 has 12 divisors (see below), whose sum is σ = 44656416. Its totient is φ = 6379480.

The previous prime is 19138433. The next prime is 19138487. The reversal of 19138452 is 25483191.

It is a tau number, because it is divible by the number of its divisors (12).

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, 797424 + ... + 797447.

It is an arithmetic number, because the mean of its divisors is an integer number (3721368).

Almost surely, 2^19138452 is an apocalyptic number.

19138452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19138452 is an abundant number, since it is smaller than the sum of its proper divisors (25517964).

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

19138452 is a wasteful number, since it uses less digits than its factorization.

19138452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594878 (or 1594876 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 19138452 is about 4374.7516500940. The cubic root of 19138452 is about 267.4867469487.

The spelling of 19138452 in words is "nineteen million, one hundred thirty-eight thousand, four hundred fifty-two".