18465413 has 2 divisors, whose sum is σ = 18465414. Its totient is φ = 18465412.

The previous prime is 18465347. The next prime is 18465449. The reversal of 18465413 is 31456481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13235044 + 5230369 = 3638^2 + 2287^2 .

It is a cyclic number.

It is not a de Polignac number, because 18465413 - 2⁸ = 18465157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18465413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18462413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9232706 + 9232707.

It is an arithmetic number, because the mean of its divisors is an integer number (9232707).

Almost surely, 2^18465413 is an apocalyptic number.

It is an amenable number.

18465413 is a deficient number, since it is larger than the sum of its proper divisors (1).

18465413 is an equidigital number, since it uses as much as digits as its factorization.

18465413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 32.

The square root of 18465413 is about 4297.1400954588. The cubic root of 18465413 is about 264.3137005947.

The spelling of 18465413 in words is "eighteen million, four hundred sixty-five thousand, four hundred thirteen".