19199442 has 16 divisors (see below), whose sum is σ = 38551392. Its totient is φ = 6374400.

The previous prime is 19199441. The next prime is 19199459. The reversal of 19199442 is 24499191.

It is a super-2 number, since 2×19199442² = 737237146222728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19199442.

It is not an unprimeable number, because it can be changed into a prime (19199441) 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 7 ways as a sum of consecutive naturals, for example, 4684 + ... + 7767.

It is an arithmetic number, because the mean of its divisors is an integer number (2409462).

Almost surely, 2^19199442 is an apocalyptic number.

19199442 is an abundant number, since it is smaller than the sum of its proper divisors (19351950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19199442 is a wasteful number, since it uses less digits than its factorization.

19199442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12713.

The product of its digits is 23328, while the sum is 39.

The square root of 19199442 is about 4381.7167868314. The cubic root of 19199442 is about 267.7705859551.

The spelling of 19199442 in words is "nineteen million, one hundred ninety-nine thousand, four hundred forty-two".