19022997 has 16 divisors (see below), whose sum is σ = 29386880. Its totient is φ = 10720512.

The previous prime is 19022987. The next prime is 19023013. The reversal of 19022997 is 79922091.

It is a happy number.

It is not a de Polignac number, because 19022997 - 2⁸ = 19022741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19022917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4672 + ... + 7737.

It is an arithmetic number, because the mean of its divisors is an integer number (1836680).

Almost surely, 2^19022997 is an apocalyptic number.

It is an amenable number.

19022997 is a deficient number, since it is larger than the sum of its proper divisors (10363883).

19022997 is a wasteful number, since it uses less digits than its factorization.

19022997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12492.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 19022997 is about 4361.5360826204. The cubic root of 19022997 is about 266.9477797690.

The spelling of 19022997 in words is "nineteen million, twenty-two thousand, nine hundred ninety-seven".