18532413 has 6 divisors (see below), whose sum is σ = 26769054. Its totient is φ = 12354936.

The previous prime is 18532403. The next prime is 18532447. The reversal of 18532413 is 31423581.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10478169 + 8054244 = 3237^2 + 2838^2 .

It is not a de Polignac number, because 18532413 - 2¹⁰ = 18531389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18532403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1029570 + ... + 1029587.

It is an arithmetic number, because the mean of its divisors is an integer number (4461509).

Almost surely, 2^18532413 is an apocalyptic number.

It is an amenable number.

18532413 is a deficient number, since it is larger than the sum of its proper divisors (8236641).

18532413 is a wasteful number, since it uses less digits than its factorization.

18532413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059163 (or 2059160 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 18532413 is about 4304.9289192738. The cubic root of 18532413 is about 264.6329937964.

Adding to 18532413 its reverse (31423581), we get a palindrome (49955994).

The spelling of 18532413 in words is "eighteen million, five hundred thirty-two thousand, four hundred thirteen".