18365490298 has 4 divisors (see below), whose sum is σ = 27548235450. Its totient is φ = 9182745148.

The previous prime is 18365490287. The next prime is 18365490313. The reversal of 18365490298 is 89209456381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89209456381 = 103 ⋅866111227.

It can be written as a sum of positive squares in only one way, i.e., 13256528769 + 5108961529 = 115137^2 + 71477^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4591372573 + ... + 4591372576.

Almost surely, 2^18365490298 is an apocalyptic number.

18365490298 is a deficient number, since it is larger than the sum of its proper divisors (9182745152).

18365490298 is an equidigital number, since it uses as much as digits as its factorization.

18365490298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9182745151.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 18365490298 in words is "eighteen billion, three hundred sixty-five million, four hundred ninety thousand, two hundred ninety-eight".