19138484 has 24 divisors (see below), whose sum is σ = 35121408. Its totient is φ = 9108000.

The previous prime is 19138433. The next prime is 19138487. The reversal of 19138484 is 48483191.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19138487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25109 + ... + 25859.

It is an arithmetic number, because the mean of its divisors is an integer number (1463392).

Almost surely, 2^19138484 is an apocalyptic number.

It is an amenable number.

19138484 is a deficient number, since it is larger than the sum of its proper divisors (15982924).

19138484 is a wasteful number, since it uses less digits than its factorization.

19138484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055 (or 1053 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 19138484 is about 4374.7553074429. The cubic root of 19138484 is about 267.4868960303.

The spelling of 19138484 in words is "nineteen million, one hundred thirty-eight thousand, four hundred eighty-four".