13490018 has 4 divisors (see below), whose sum is σ = 20235030. Its totient is φ = 6745008.

The previous prime is 13489963. The next prime is 13490023. The reversal of 13490018 is 81009431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11648569 + 1841449 = 3413^2 + 1357^2 .

It is a zygodrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3372503 + ... + 3372506.

Almost surely, 2^13490018 is an apocalyptic number.

13490018 is a deficient number, since it is larger than the sum of its proper divisors (6745012).

13490018 is an equidigital number, since it uses as much as digits as its factorization.

13490018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6745011.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 13490018 is about 3672.8759848380. The cubic root of 13490018 is about 238.0514565200.

Adding to 13490018 its reverse (81009431), we get a palindrome (94499449).

The spelling of 13490018 in words is "thirteen million, four hundred ninety thousand, eighteen".