18797545 has 8 divisors (see below), whose sum is σ = 24292296. Its totient is φ = 13881216.

The previous prime is 18797531. The next prime is 18797567. The reversal of 18797545 is 54579781.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1065024 + 17732521 = 1032^2 + 4211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18797545 - 2¹⁵ = 18764777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18797495 and 18797504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144532 + ... + 144661.

It is an arithmetic number, because the mean of its divisors is an integer number (3036537).

Almost surely, 2^18797545 is an apocalyptic number.

It is an amenable number.

18797545 is a deficient number, since it is larger than the sum of its proper divisors (5494751).

18797545 is a wasteful number, since it uses less digits than its factorization.

18797545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289211.

The product of its digits is 352800, while the sum is 46.

The square root of 18797545 is about 4335.6135667285. The cubic root of 18797545 is about 265.8890043246.

The spelling of 18797545 in words is "eighteen million, seven hundred ninety-seven thousand, five hundred forty-five".