18234901 has 4 divisors (see below), whose sum is σ = 18287500. Its totient is φ = 18182304.

The previous prime is 18234893. The next prime is 18234907. The reversal of 18234901 is 10943281.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10943281 = 53 ⋅206477.

It can be written as a sum of positive squares in 2 ways, for example, as 5058001 + 13176900 = 2249^2 + 3630^2 .

It is a cyclic number.

It is not a de Polignac number, because 18234901 - 2³ = 18234893 is a prime.

It is a super-2 number, since 2×18234901² = 665023228959602, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18234901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18234907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25776 + ... + 26473.

It is an arithmetic number, because the mean of its divisors is an integer number (4571875).

Almost surely, 2^18234901 is an apocalyptic number.

It is an amenable number.

18234901 is a deficient number, since it is larger than the sum of its proper divisors (52599).

18234901 is an equidigital number, since it uses as much as digits as its factorization.

18234901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52598.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18234901 is about 4270.2343027052. The cubic root of 18234901 is about 263.2092432846.

It can be divided in two parts, 1823 and 4901, that added together give a square (6724 = 82²).

The spelling of 18234901 in words is "eighteen million, two hundred thirty-four thousand, nine hundred one".