19139159 has 8 divisors (see below), whose sum is σ = 21322560. Its totient is φ = 17057376.

The previous prime is 19139143. The next prime is 19139173. The reversal of 19139159 is 95193191.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 19139159 - 2⁴ = 19139143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19139119) 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, 25007 + ... + 25760.

It is an arithmetic number, because the mean of its divisors is an integer number (2665320).

Almost surely, 2^19139159 is an apocalyptic number.

19139159 is a deficient number, since it is larger than the sum of its proper divisors (2183401).

19139159 is a wasteful number, since it uses less digits than its factorization.

19139159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50809.

The product of its digits is 10935, while the sum is 38.

The square root of 19139159 is about 4374.8324539347. The cubic root of 19139159 is about 267.4900406808.

The spelling of 19139159 in words is "nineteen million, one hundred thirty-nine thousand, one hundred fifty-nine".