18299946 has 32 divisors (see below), whose sum is σ = 42622848. Its totient is φ = 5129280.

The previous prime is 18299903. The next prime is 18299947. The reversal of 18299946 is 64999281.

It is a junction number, because it is equal to n+sod(n) for n = 18299895 and 18299904.

It is not an unprimeable number, because it can be changed into a prime (18299947) 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, 1885 + ... + 6336.

It is an arithmetic number, because the mean of its divisors is an integer number (1331964).

Almost surely, 2^18299946 is an apocalyptic number.

18299946 is an abundant number, since it is smaller than the sum of its proper divisors (24322902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18299946 is a wasteful number, since it uses less digits than its factorization.

18299946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8286.

The product of its digits is 279936, while the sum is 48.

The square root of 18299946 is about 4277.8436156550. The cubic root of 18299946 is about 263.5218330251.

It can be divided in two parts, 182 and 99946, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 18299946 in words is "eighteen million, two hundred ninety-nine thousand, nine hundred forty-six".