18097061 has 4 divisors (see below), whose sum is σ = 19161612. Its totient is φ = 17032512.

The previous prime is 18097043. The next prime is 18097069. The reversal of 18097061 is 16079081.

18097061 = 713² + 714² + ... + 746².

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 8300161 + 9796900 = 2881^2 + 3130^2 .

It is a cyclic number.

It is not a de Polignac number, because 18097061 - 2¹⁴ = 18080677 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 (18097069) 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, 532250 + ... + 532283.

It is an arithmetic number, because the mean of its divisors is an integer number (4790403).

Almost surely, 2^18097061 is an apocalyptic number.

It is an amenable number.

18097061 is a deficient number, since it is larger than the sum of its proper divisors (1064551).

18097061 is a wasteful number, since it uses less digits than its factorization.

18097061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064550.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 18097061 is about 4254.0640568755. The cubic root of 18097061 is about 262.5443541076.

The spelling of 18097061 in words is "eighteen million, ninety-seven thousand, sixty-one".