18152946 has 24 divisors (see below), whose sum is σ = 44950464. Its totient is φ = 5186520.

The previous prime is 18152941. The next prime is 18152971. The reversal of 18152946 is 64925181.

It is a self number, because there is not a number n which added to its sum of digits gives 18152946.

It is not an unprimeable number, because it can be changed into a prime (18152941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71910 + ... + 72161.

It is an arithmetic number, because the mean of its divisors is an integer number (1872936).

Almost surely, 2^18152946 is an apocalyptic number.

18152946 is an abundant number, since it is smaller than the sum of its proper divisors (26797518).

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

18152946 is a wasteful number, since it uses less digits than its factorization.

18152946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144086 (or 144083 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 18152946 is about 4260.6274185852. The cubic root of 18152946 is about 262.8143282222.

It can be divided in two parts, 1815 and 2946, that added together give a square (4761 = 69²).

The spelling of 18152946 in words is "eighteen million, one hundred fifty-two thousand, nine hundred forty-six".