18461967 has 8 divisors (see below), whose sum is σ = 25080624. Its totient is φ = 12075648.

The previous prime is 18461959. The next prime is 18461969. The reversal of 18461967 is 76916481.

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

It is not a de Polignac number, because 18461967 - 2³ = 18461959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18461969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57898 + ... + 58215.

It is an arithmetic number, because the mean of its divisors is an integer number (3135078).

Almost surely, 2^18461967 is an apocalyptic number.

18461967 is a deficient number, since it is larger than the sum of its proper divisors (6618657).

18461967 is a wasteful number, since it uses less digits than its factorization.

18461967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116169.

The product of its digits is 72576, while the sum is 42.

The square root of 18461967 is about 4296.7391123967. The cubic root of 18461967 is about 264.2972575709.

The spelling of 18461967 in words is "eighteen million, four hundred sixty-one thousand, nine hundred sixty-seven".