19139141 has 8 divisors (see below), whose sum is σ = 21985920. Its totient is φ = 16320528.

The previous prime is 19139129. The next prime is 19139143. The reversal of 19139141 is 14193191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-19139141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19139143) 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, 5561 + ... + 8318.

It is an arithmetic number, because the mean of its divisors is an integer number (2748240).

Almost surely, 2^19139141 is an apocalyptic number.

It is an amenable number.

19139141 is a deficient number, since it is larger than the sum of its proper divisors (2846779).

19139141 is a wasteful number, since it uses less digits than its factorization.

19139141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14083.

The product of its digits is 972, while the sum is 29.

The square root of 19139141 is about 4374.8303967125. The cubic root of 19139141 is about 267.4899568244.

The spelling of 19139141 in words is "nineteen million, one hundred thirty-nine thousand, one hundred forty-one".