18750961 has 8 divisors (see below), whose sum is σ = 18992960. Its totient is φ = 18510768.

The previous prime is 18750931. The next prime is 18750989. The reversal of 18750961 is 16905781.

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 18750961 - 2¹¹ = 18748913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18750961.

It is not an unprimeable number, because it can be changed into a prime (18750931) 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, 38260 + ... + 38746.

It is an arithmetic number, because the mean of its divisors is an integer number (2374120).

Almost surely, 2^18750961 is an apocalyptic number.

It is an amenable number.

18750961 is a deficient number, since it is larger than the sum of its proper divisors (241999).

18750961 is a wasteful number, since it uses less digits than its factorization.

18750961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 18750961 is about 4330.2379842221. The cubic root of 18750961 is about 265.6691809509.

The spelling of 18750961 in words is "eighteen million, seven hundred fifty thousand, nine hundred sixty-one".