18148901 has 2 divisors, whose sum is σ = 18148902. Its totient is φ = 18148900.

The previous prime is 18148873. The next prime is 18148939. The reversal of 18148901 is 10984181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15792676 + 2356225 = 3974^2 + 1535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18148901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18148951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9074450 + 9074451.

It is an arithmetic number, because the mean of its divisors is an integer number (9074451).

Almost surely, 2^18148901 is an apocalyptic number.

It is an amenable number.

18148901 is a deficient number, since it is larger than the sum of its proper divisors (1).

18148901 is an equidigital number, since it uses as much as digits as its factorization.

18148901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 18148901 is about 4260.1526967939. The cubic root of 18148901 is about 262.7948059010.

The spelling of 18148901 in words is "eighteen million, one hundred forty-eight thousand, nine hundred one".