18229707 has 24 divisors (see below), whose sum is σ = 27256320. Its totient is φ = 11733120.

The previous prime is 18229691. The next prime is 18229709. The reversal of 18229707 is 70792281.

It is not a de Polignac number, because 18229707 - 2⁴ = 18229691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18229709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46669 + ... + 47057.

It is an arithmetic number, because the mean of its divisors is an integer number (1135680).

Almost surely, 2^18229707 is an apocalyptic number.

18229707 is a deficient number, since it is larger than the sum of its proper divisors (9026613).

18229707 is a wasteful number, since it uses less digits than its factorization.

18229707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 18229707 is about 4269.6260960417. The cubic root of 18229707 is about 263.1842502116.

The spelling of 18229707 in words is "eighteen million, two hundred twenty-nine thousand, seven hundred seven".