18235061 has 4 divisors (see below), whose sum is σ = 19637772. Its totient is φ = 16832352.

The previous prime is 18235057. The next prime is 18235073. The reversal of 18235061 is 16053281.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12208036 + 6027025 = 3494^2 + 2455^2 .

It is a cyclic number.

It is not a de Polignac number, because 18235061 - 2² = 18235057 is a prime.

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 18235061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18285061) 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, 701336 + ... + 701361.

It is an arithmetic number, because the mean of its divisors is an integer number (4909443).

Almost surely, 2^18235061 is an apocalyptic number.

It is an amenable number.

18235061 is a deficient number, since it is larger than the sum of its proper divisors (1402711).

18235061 is a wasteful number, since it uses less digits than its factorization.

18235061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402710.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 18235061 is about 4270.2530369991. The cubic root of 18235061 is about 263.2100131152.

The spelling of 18235061 in words is "eighteen million, two hundred thirty-five thousand, sixty-one".