18951241 has 4 divisors (see below), whose sum is σ = 19775232. Its totient is φ = 18127252.

The previous prime is 18951217. The next prime is 18951269. The reversal of 18951241 is 14215981.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14215981 = 13 ⋅1093537.

It is a cyclic number.

It is not a de Polignac number, because 18951241 - 2¹⁷ = 18820169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18951271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411961 + ... + 412006.

It is an arithmetic number, because the mean of its divisors is an integer number (4943808).

Almost surely, 2^18951241 is an apocalyptic number.

It is an amenable number.

18951241 is a deficient number, since it is larger than the sum of its proper divisors (823991).

18951241 is an equidigital number, since it uses as much as digits as its factorization.

18951241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823990.

The product of its digits is 2880, while the sum is 31.

The square root of 18951241 is about 4353.3023097414. The cubic root of 18951241 is about 266.6117086396.

It can be divided in two parts, 1895 and 1241, that added together give a square (3136 = 56²).

The spelling of 18951241 in words is "eighteen million, nine hundred fifty-one thousand, two hundred forty-one".