18822797 has 16 divisors (see below), whose sum is σ = 22413312. Its totient is φ = 15467760.

The previous prime is 18822781. The next prime is 18822799. The reversal of 18822797 is 79722881.

It is not a de Polignac number, because 18822797 - 2⁴ = 18822781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18822799) 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, 27218 + ... + 27900.

It is an arithmetic number, because the mean of its divisors is an integer number (1400832).

Almost surely, 2^18822797 is an apocalyptic number.

It is an amenable number.

18822797 is a deficient number, since it is larger than the sum of its proper divisors (3590515).

18822797 is a wasteful number, since it uses less digits than its factorization.

18822797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

The product of its digits is 112896, while the sum is 44.

The square root of 18822797 is about 4338.5247492667. The cubic root of 18822797 is about 266.0080132133.

The spelling of 18822797 in words is "eighteen million, eight hundred twenty-two thousand, seven hundred ninety-seven".