19139502 has 16 divisors (see below), whose sum is σ = 38374992. Its totient is φ = 6363840.

The previous prime is 19139489. The next prime is 19139513. The reversal of 19139502 is 20593191.

It is a self number, because there is not a number n which added to its sum of digits gives 19139502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1263 + ... + 6314.

It is an arithmetic number, because the mean of its divisors is an integer number (2398437).

Almost surely, 2^19139502 is an apocalyptic number.

19139502 is an abundant number, since it is smaller than the sum of its proper divisors (19235490).

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

19139502 is a wasteful number, since it uses less digits than its factorization.

19139502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8003.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 19139502 is about 4374.8716552603. The cubic root of 19139502 is about 267.4916386008.

It can be divided in two parts, 191 and 39502, that added together give a palindrome (39693).

The spelling of 19139502 in words is "nineteen million, one hundred thirty-nine thousand, five hundred two".