19412923 has 4 divisors (see below), whose sum is σ = 19485360. Its totient is φ = 19340488.

The previous prime is 19412917. The next prime is 19412933. The reversal of 19412923 is 32921491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19412923 - 2⁹ = 19412411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19412933) 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, 35815 + ... + 36352.

It is an arithmetic number, because the mean of its divisors is an integer number (4871340).

Almost surely, 2^19412923 is an apocalyptic number.

19412923 is a deficient number, since it is larger than the sum of its proper divisors (72437).

19412923 is an equidigital number, since it uses as much as digits as its factorization.

19412923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72436.

The product of its digits is 3888, while the sum is 31.

The square root of 19412923 is about 4406.0098728895. The cubic root of 19412923 is about 268.7593883145.

The spelling of 19412923 in words is "nineteen million, four hundred twelve thousand, nine hundred twenty-three".