18972041 has 8 divisors (see below), whose sum is σ = 20930400. Its totient is φ = 17052640.

The previous prime is 18972029. The next prime is 18972047. The reversal of 18972041 is 14027981.

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

It is a de Polignac number, because none of the positive numbers 2^k-18972041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18971989 and 18972007.

It is not an unprimeable number, because it can be changed into a prime (18972047) 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, 8711 + ... + 10668.

It is an arithmetic number, because the mean of its divisors is an integer number (2616300).

Almost surely, 2^18972041 is an apocalyptic number.

18972041 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18972041 is a deficient number, since it is larger than the sum of its proper divisors (1958359).

18972041 is a wasteful number, since it uses less digits than its factorization.

18972041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19479.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 18972041 is about 4355.6906455808. The cubic root of 18972041 is about 266.7092131766.

The spelling of 18972041 in words is "eighteen million, nine hundred seventy-two thousand, forty-one".