18958146 has 8 divisors (see below), whose sum is σ = 37916304. Its totient is φ = 6319380.

The previous prime is 18958099. The next prime is 18958151. The reversal of 18958146 is 64185981.

It is a sphenic number, since it is the product of 3 distinct primes.

18958146 is an admirable number.

It is a super-2 number, since 2×18958146² = 718822599514632, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18958098 and 18958107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579840 + ... + 1579851.

It is an arithmetic number, because the mean of its divisors is an integer number (4739538).

Almost surely, 2^18958146 is an apocalyptic number.

18958146 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18958146 is a wasteful number, since it uses less digits than its factorization.

18958146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159696.

The product of its digits is 69120, while the sum is 42.

The square root of 18958146 is about 4354.0953136099. The cubic root of 18958146 is about 266.6440852406.

The spelling of 18958146 in words is "eighteen million, nine hundred fifty-eight thousand, one hundred forty-six".