19053139 has 4 divisors (see below), whose sum is σ = 21775024. Its totient is φ = 16331256.

The previous prime is 19053119. The next prime is 19053149. The reversal of 19053139 is 93135091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93135091 = 7 ⋅13305013.

It is a cyclic number.

It is not a de Polignac number, because 19053139 - 2⁷ = 19053011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19053139.

It is not an unprimeable number, because it can be changed into a prime (19053119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1360932 + ... + 1360945.

It is an arithmetic number, because the mean of its divisors is an integer number (5443756).

Almost surely, 2^19053139 is an apocalyptic number.

19053139 is a deficient number, since it is larger than the sum of its proper divisors (2721885).

19053139 is an equidigital number, since it uses as much as digits as its factorization.

19053139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721884.

The product of its (nonzero) digits is 3645, while the sum is 31.

The square root of 19053139 is about 4364.9901489007. The cubic root of 19053139 is about 267.0886985719.

It can be divided in two parts, 1905 and 3139, that multiplied together give a palindrome (5979795).

The spelling of 19053139 in words is "nineteen million, fifty-three thousand, one hundred thirty-nine".