19139011 has 8 divisors (see below), whose sum is σ = 19623744. Its totient is φ = 18657600.

The previous prime is 19139009. The next prime is 19139017. The reversal of 19139011 is 11093191.

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 19139011 - 2¹ = 19139009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19139017) 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, 14061 + ... + 15361.

It is an arithmetic number, because the mean of its divisors is an integer number (2452968).

Almost surely, 2^19139011 is an apocalyptic number.

19139011 is a deficient number, since it is larger than the sum of its proper divisors (484733).

19139011 is a wasteful number, since it uses less digits than its factorization.

19139011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661.

The product of its (nonzero) digits is 243, while the sum is 25.

The square root of 19139011 is about 4374.8155389685. The cubic root of 19139011 is about 267.4893511934.

The spelling of 19139011 in words is "nineteen million, one hundred thirty-nine thousand, eleven".