18856045 has 16 divisors (see below), whose sum is σ = 24554880. Its totient is φ = 13817664.

The previous prime is 18856031. The next prime is 18856049. The reversal of 18856045 is 54065881.

It is a cyclic number.

It is not a de Polignac number, because 18856045 - 2⁷ = 18855917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18855995 and 18856013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18856049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7992 + ... + 10078.

It is an arithmetic number, because the mean of its divisors is an integer number (1534680).

Almost surely, 2^18856045 is an apocalyptic number.

It is an amenable number.

18856045 is a deficient number, since it is larger than the sum of its proper divisors (5698835).

18856045 is a wasteful number, since it uses less digits than its factorization.

18856045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 18856045 is about 4342.3547759252. The cubic root of 18856045 is about 266.1645438312.

The spelling of 18856045 in words is "eighteen million, eight hundred fifty-six thousand, forty-five".