18006951 has 8 divisors (see below), whose sum is σ = 24123904. Its totient is φ = 11947320.

The previous prime is 18006943. The next prime is 18006971. The reversal of 18006951 is 15960081.

It is a happy number.

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

It is not a de Polignac number, because 18006951 - 2³ = 18006943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18006931) 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, 13591 + ... + 14856.

It is an arithmetic number, because the mean of its divisors is an integer number (3015488).

Almost surely, 2^18006951 is an apocalyptic number.

18006951 is a deficient number, since it is larger than the sum of its proper divisors (6116953).

18006951 is a wasteful number, since it uses less digits than its factorization.

18006951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28661.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 18006951 is about 4243.4597912552. The cubic root of 18006951 is about 262.1078698450.

The spelling of 18006951 in words is "eighteen million, six thousand, nine hundred fifty-one".