19139852 has 6 divisors (see below), whose sum is σ = 33494748. Its totient is φ = 9569924.

The previous prime is 19139851. The next prime is 19139863. The reversal of 19139852 is 25893191.

It is not an unprimeable number, because it can be changed into a prime (19139851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2392478 + ... + 2392485.

It is an arithmetic number, because the mean of its divisors is an integer number (5582458).

Almost surely, 2^19139852 is an apocalyptic number.

It is an amenable number.

19139852 is a deficient number, since it is larger than the sum of its proper divisors (14354896).

19139852 is a wasteful number, since it uses less digits than its factorization.

19139852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4784967 (or 4784965 counting only the distinct ones).

The product of its digits is 19440, while the sum is 38.

The square root of 19139852 is about 4374.9116562509. The cubic root of 19139852 is about 267.4932691118.

It can be divided in two parts, 19139 and 852, that added together give a palindrome (19991).

The spelling of 19139852 in words is "nineteen million, one hundred thirty-nine thousand, eight hundred fifty-two".