19147923 has 12 divisors (see below), whose sum is σ = 27696240. Its totient is φ = 12747696.

The previous prime is 19147889. The next prime is 19147927. The reversal of 19147923 is 32974191.

It is not a de Polignac number, because 19147923 - 2⁹ = 19147411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19147927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11065 + ... + 12677.

It is an arithmetic number, because the mean of its divisors is an integer number (2308020).

Almost surely, 2^19147923 is an apocalyptic number.

19147923 is a deficient number, since it is larger than the sum of its proper divisors (8548317).

19147923 is a wasteful number, since it uses less digits than its factorization.

19147923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938 (or 2935 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 19147923 is about 4375.8339776550. The cubic root of 19147923 is about 267.5308631813.

The spelling of 19147923 in words is "nineteen million, one hundred forty-seven thousand, nine hundred twenty-three".