18746961 has 8 divisors (see below), whose sum is σ = 25297440. Its totient is φ = 12347232.

The previous prime is 18746953. The next prime is 18746969. The reversal of 18746961 is 16964781.

It is an interprime number because it is at equal distance from previous prime (18746953) and next prime (18746969).

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

It is not a de Polignac number, because 18746961 - 2³ = 18746953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18746969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37396 + ... + 37893.

It is an arithmetic number, because the mean of its divisors is an integer number (3162180).

Almost surely, 2^18746961 is an apocalyptic number.

It is an amenable number.

18746961 is a deficient number, since it is larger than the sum of its proper divisors (6550479).

18746961 is an equidigital number, since it uses as much as digits as its factorization.

18746961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75375.

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

The square root of 18746961 is about 4329.7760912084. The cubic root of 18746961 is about 265.6502885451.

The spelling of 18746961 in words is "eighteen million, seven hundred forty-six thousand, nine hundred sixty-one".