18925961 has 8 divisors (see below), whose sum is σ = 19451040. Its totient is φ = 18407808.

The previous prime is 18925937. The next prime is 18925979. The reversal of 18925961 is 16952981.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18925961 - 2⁶ = 18925897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18925901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4070 + ... + 7376.

It is an arithmetic number, because the mean of its divisors is an integer number (2431380).

Almost surely, 2^18925961 is an apocalyptic number.

It is an amenable number.

18925961 is a deficient number, since it is larger than the sum of its proper divisors (525079).

18925961 is an equidigital number, since it uses as much as digits as its factorization.

18925961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463.

The product of its digits is 38880, while the sum is 41.

The square root of 18925961 is about 4350.3977979031. The cubic root of 18925961 is about 266.4931070287.

The spelling of 18925961 in words is "eighteen million, nine hundred twenty-five thousand, nine hundred sixty-one".