18473401 has 2 divisors, whose sum is σ = 18473402. Its totient is φ = 18473400.

The previous prime is 18473387. The next prime is 18473437. The reversal of 18473401 is 10437481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18284176 + 189225 = 4276^2 + 435^2 .

It is a cyclic number.

It is not a de Polignac number, because 18473401 - 2¹¹ = 18471353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18473401.

It is not a weakly prime, because it can be changed into another prime (18473461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9236700 + 9236701.

It is an arithmetic number, because the mean of its divisors is an integer number (9236701).

Almost surely, 2^18473401 is an apocalyptic number.

It is an amenable number.

18473401 is a deficient number, since it is larger than the sum of its proper divisors (1).

18473401 is an equidigital number, since it uses as much as digits as its factorization.

18473401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 18473401 is about 4298.0694503463. The cubic root of 18473401 is about 264.3518084789.

The spelling of 18473401 in words is "eighteen million, four hundred seventy-three thousand, four hundred one".