18733797 has 12 divisors (see below), whose sum is σ = 27993420. Its totient is φ = 12058368.

The previous prime is 18733789. The next prime is 18733807. The reversal of 18733797 is 79733781.

It can be written as a sum of positive squares in 2 ways, for example, as 11329956 + 7403841 = 3366^2 + 2721^2 .

It is not a de Polignac number, because 18733797 - 2³ = 18733789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18733717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35628 + ... + 36149.

It is an arithmetic number, because the mean of its divisors is an integer number (2332785).

Almost surely, 2^18733797 is an apocalyptic number.

It is an amenable number.

18733797 is a deficient number, since it is larger than the sum of its proper divisors (9259623).

18733797 is a wasteful number, since it uses less digits than its factorization.

18733797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71812 (or 71809 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The square root of 18733797 is about 4328.2556532626. The cubic root of 18733797 is about 265.5880946559.

The spelling of 18733797 in words is "eighteen million, seven hundred thirty-three thousand, seven hundred ninety-seven".