18754897 has 8 divisors (see below), whose sum is σ = 21872000. Its totient is φ = 16075332.

The previous prime is 18754849. The next prime is 18754903. The reversal of 18754897 is 79845781.

It is not a de Polignac number, because 18754897 - 2¹¹ = 18752849 is a prime.

It is a super-2 number, since 2×18754897² = 703492322961218, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18754897.

It is not an unprimeable number, because it can be changed into a prime (18754817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26997 + ... + 27682.

It is an arithmetic number, because the mean of its divisors is an integer number (2734000).

Almost surely, 2^18754897 is an apocalyptic number.

It is an amenable number.

18754897 is a deficient number, since it is larger than the sum of its proper divisors (3117103).

18754897 is an frugal number, since it uses more digits than its factorization.

18754897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54700 (or 54686 counting only the distinct ones).

The product of its digits is 564480, while the sum is 49.

The square root of 18754897 is about 4330.6924388601. The cubic root of 18754897 is about 265.6877684558.

The spelling of 18754897 in words is "eighteen million, seven hundred fifty-four thousand, eight hundred ninety-seven".