18766045 has 32 divisors (see below), whose sum is σ = 25816320. Its totient is φ = 13009920.

The previous prime is 18766039. The next prime is 18766049. The reversal of 18766045 is 54066781.

It is not a de Polignac number, because 18766045 - 2¹⁵ = 18733277 is a prime.

It is a super-4 number, since 4×18766045⁴ (a number of 30 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18765995 and 18766013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18766049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56530 + ... + 56860.

It is an arithmetic number, because the mean of its divisors is an integer number (806760).

Almost surely, 2^18766045 is an apocalyptic number.

It is an amenable number.

18766045 is a deficient number, since it is larger than the sum of its proper divisors (7050275).

18766045 is a wasteful number, since it uses less digits than its factorization.

18766045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 18766045 is about 4331.9793397476. The cubic root of 18766045 is about 265.7404000536.

It can be divided in two parts, 1876 and 6045, that added together give a square (7921 = 89²).

The spelling of 18766045 in words is "eighteen million, seven hundred sixty-six thousand, forty-five".