19122494 has 8 divisors (see below), whose sum is σ = 28764720. Its totient is φ = 9534256.

The previous prime is 19122491. The next prime is 19122497. The reversal of 19122494 is 49422191.

It is an interprime number because it is at equal distance from previous prime (19122491) and next prime (19122497).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 19122494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19122491) 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 3 ways as a sum of consecutive naturals, for example, 12599 + ... + 14034.

It is an arithmetic number, because the mean of its divisors is an integer number (3595590).

Almost surely, 2^19122494 is an apocalyptic number.

19122494 is a deficient number, since it is larger than the sum of its proper divisors (9642226).

19122494 is a wasteful number, since it uses less digits than its factorization.

19122494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26994.

The product of its digits is 5184, while the sum is 32.

The square root of 19122494 is about 4372.9273947780. The cubic root of 19122494 is about 267.4123811213.

The spelling of 19122494 in words is "nineteen million, one hundred twenty-two thousand, four hundred ninety-four".