19119947 has 24 divisors (see below), whose sum is σ = 25554240. Its totient is φ = 14106960.

The previous prime is 19119943. The next prime is 19119949. The reversal of 19119947 is 74991191.

It is not a de Polignac number, because 19119947 - 2² = 19119943 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (19119943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9308 + ... + 11174.

It is an arithmetic number, because the mean of its divisors is an integer number (1064760).

Almost surely, 2^19119947 is an apocalyptic number.

19119947 is a deficient number, since it is larger than the sum of its proper divisors (6434293).

19119947 is a wasteful number, since it uses less digits than its factorization.

19119947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911 (or 1904 counting only the distinct ones).

The product of its digits is 20412, while the sum is 41.

The square root of 19119947 is about 4372.6361614020. The cubic root of 19119947 is about 267.4005080260.

The spelling of 19119947 in words is "nineteen million, one hundred nineteen thousand, nine hundred forty-seven".