19422813 has 16 divisors (see below), whose sum is σ = 26357760. Its totient is φ = 12720624.

The previous prime is 19422803. The next prime is 19422829. The reversal of 19422813 is 31822491.

It is not a de Polignac number, because 19422813 - 2¹⁰ = 19421789 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19422803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73720 + ... + 73982.

It is an arithmetic number, because the mean of its divisors is an integer number (1647360).

Almost surely, 2^19422813 is an apocalyptic number.

It is an amenable number.

19422813 is a deficient number, since it is larger than the sum of its proper divisors (6934947).

19422813 is a wasteful number, since it uses less digits than its factorization.

19422813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608.

The product of its digits is 3456, while the sum is 30.

The square root of 19422813 is about 4407.1320606490. The cubic root of 19422813 is about 268.8050207883.

The spelling of 19422813 in words is "nineteen million, four hundred twenty-two thousand, eight hundred thirteen".