18699045 has 16 divisors (see below), whose sum is σ = 30884352. Its totient is φ = 9650880.

The previous prime is 18699041. The next prime is 18699049. The reversal of 18699045 is 54099681.

It is an interprime number because it is at equal distance from previous prime (18699041) and next prime (18699049).

It is not a de Polignac number, because 18699045 - 2² = 18699041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18698988 and 18699006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18699041) 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, 19642 + ... + 20571.

It is an arithmetic number, because the mean of its divisors is an integer number (1930272).

Almost surely, 2^18699045 is an apocalyptic number.

18699045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18699045 is a deficient number, since it is larger than the sum of its proper divisors (12185307).

18699045 is a wasteful number, since it uses less digits than its factorization.

18699045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40252.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 18699045 is about 4324.2392394501. The cubic root of 18699045 is about 265.4237672190.

The spelling of 18699045 in words is "eighteen million, six hundred ninety-nine thousand, forty-five".