19138088 has 16 divisors (see below), whose sum is σ = 36561780. Its totient is φ = 9388288.

The previous prime is 19138087. The next prime is 19138099. The reversal of 19138088 is 88083191.

It can be written as a sum of positive squares in 2 ways, for example, as 18992164 + 145924 = 4358^2 + 382^2 .

It is not an unprimeable number, because it can be changed into a prime (19138087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22145 + ... + 22992.

Almost surely, 2^19138088 is an apocalyptic number.

It is an amenable number.

19138088 is a deficient number, since it is larger than the sum of its proper divisors (17423692).

19138088 is a wasteful number, since it uses less digits than its factorization.

19138088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45196 (or 45192 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 38.

The square root of 19138088 is about 4374.7100475346. The cubic root of 19138088 is about 267.4850511342.

It can be divided in two parts, 1913 and 8088, that added together give a palindrome (10001).

The spelling of 19138088 in words is "nineteen million, one hundred thirty-eight thousand, eighty-eight".