18468797 has 4 divisors (see below), whose sum is σ = 18477756. Its totient is φ = 18459840.

The previous prime is 18468767. The next prime is 18468811. The reversal of 18468797 is 79786481.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 13388281 + 5080516 = 3659^2 + 2254^2 .

It is a cyclic number.

It is not a de Polignac number, because 18468797 - 2¹² = 18464701 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 (18468767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347 + ... + 6087.

It is an arithmetic number, because the mean of its divisors is an integer number (4619439).

Almost surely, 2^18468797 is an apocalyptic number.

It is an amenable number.

18468797 is a deficient number, since it is larger than the sum of its proper divisors (8959).

18468797 is an equidigital number, since it uses as much as digits as its factorization.

18468797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8958.

The product of its digits is 677376, while the sum is 50.

The square root of 18468797 is about 4297.5338276737. The cubic root of 18468797 is about 264.3298457870.

The spelling of 18468797 in words is "eighteen million, four hundred sixty-eight thousand, seven hundred ninety-seven".