18534101 has 6 divisors (see below), whose sum is σ = 19561302. Its totient is φ = 17558280.

The previous prime is 18534079. The next prime is 18534137. The reversal of 18534101 is 10143581.

It can be written as a sum of positive squares in only one way, i.e., 17631601 + 902500 = 4199^2 + 950^2 .

It is a de Polignac number, because none of the positive numbers 2^k-18534101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18534181) 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, 25310 + ... + 26031.

It is an arithmetic number, because the mean of its divisors is an integer number (3260217).

Almost surely, 2^18534101 is an apocalyptic number.

It is an amenable number.

18534101 is a deficient number, since it is larger than the sum of its proper divisors (1027201).

18534101 is an equidigital number, since it uses as much as digits as its factorization.

18534101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51379 (or 51360 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 18534101 is about 4305.1249691501. The cubic root of 18534101 is about 264.6410281330.

Adding to 18534101 its reverse (10143581), we get a palindrome (28677682).

The spelling of 18534101 in words is "eighteen million, five hundred thirty-four thousand, one hundred one".