19142919 has 8 divisors (see below), whose sum is σ = 28359920. Its totient is φ = 12761928.

The previous prime is 19142917. The next prime is 19142927. The reversal of 19142919 is 91924191.

It is not a de Polignac number, because 19142919 - 2¹ = 19142917 is a prime.

It is a super-2 number, since 2×19142919² = 732902695681122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19142917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354472 + ... + 354525.

It is an arithmetic number, because the mean of its divisors is an integer number (3544990).

Almost surely, 2^19142919 is an apocalyptic number.

19142919 is a deficient number, since it is larger than the sum of its proper divisors (9217001).

19142919 is an equidigital number, since it uses as much as digits as its factorization.

19142919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709006 (or 709000 counting only the distinct ones).

The product of its digits is 5832, while the sum is 36.

The square root of 19142919 is about 4375.2621635737. The cubic root of 19142919 is about 267.5075561961.

The spelling of 19142919 in words is "nineteen million, one hundred forty-two thousand, nine hundred nineteen".