18612353 has 2 divisors, whose sum is σ = 18612354. Its totient is φ = 18612352.

The previous prime is 18612323. The next prime is 18612371. The reversal of 18612353 is 35321681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11888704 + 6723649 = 3448^2 + 2593^2 .

It is a cyclic number.

It is not a de Polignac number, because 18612353 - 2¹² = 18608257 is a prime.

It is not a weakly prime, because it can be changed into another prime (18612323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9306176 + 9306177.

It is an arithmetic number, because the mean of its divisors is an integer number (9306177).

Almost surely, 2^18612353 is an apocalyptic number.

It is an amenable number.

18612353 is a deficient number, since it is larger than the sum of its proper divisors (1).

18612353 is an equidigital number, since it uses as much as digits as its factorization.

18612353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 18612353 is about 4314.2036345078. The cubic root of 18612353 is about 265.0129482222.

The spelling of 18612353 in words is "eighteen million, six hundred twelve thousand, three hundred fifty-three".