19673013 has 4 divisors (see below), whose sum is σ = 26230688. Its totient is φ = 13115340.

The previous prime is 19672997. The next prime is 19673023. The reversal of 19673013 is 31037691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 19673013 - 2⁴ = 19672997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19673023) 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, 3278833 + ... + 3278838.

It is an arithmetic number, because the mean of its divisors is an integer number (6557672).

Almost surely, 2^19673013 is an apocalyptic number.

It is an amenable number.

19673013 is a deficient number, since it is larger than the sum of its proper divisors (6557675).

19673013 is an equidigital number, since it uses as much as digits as its factorization.

19673013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6557674.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 19673013 is about 4435.4270369379. The cubic root of 19673013 is about 269.9543269795.

The spelling of 19673013 in words is "nineteen million, six hundred seventy-three thousand, thirteen".