19099994 has 8 divisors (see below), whose sum is σ = 29053728. Its totient is φ = 9415420.

The previous prime is 19099991. The next prime is 19100033. The reversal of 19099994 is 49999091.

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

It is not an unprimeable number, because it can be changed into a prime (19099991) 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, 67112 + ... + 67395.

It is an arithmetic number, because the mean of its divisors is an integer number (3631716).

Almost surely, 2^19099994 is an apocalyptic number.

19099994 is a deficient number, since it is larger than the sum of its proper divisors (9953734).

19099994 is a wasteful number, since it uses less digits than its factorization.

19099994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134580.

The product of its (nonzero) digits is 236196, while the sum is 50.

The square root of 19099994 is about 4370.3539902392. The cubic root of 19099994 is about 267.3074586157.

The spelling of 19099994 in words is "nineteen million, ninety-nine thousand, nine hundred ninety-four".