18164133397 has 4 divisors (see below), whose sum is σ = 18750073216. Its totient is φ = 17578193580.

The previous prime is 18164133373. The next prime is 18164133409. The reversal of 18164133397 is 79333146181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18164133397 - 2¹⁹ = 18163609109 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 (18164133307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292969863 + ... + 292969924.

It is an arithmetic number, because the mean of its divisors is an integer number (4687518304).

Almost surely, 2^18164133397 is an apocalyptic number.

It is an amenable number.

18164133397 is a deficient number, since it is larger than the sum of its proper divisors (585939819).

18164133397 is an equidigital number, since it uses as much as digits as its factorization.

18164133397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585939818.

The product of its digits is 326592, while the sum is 46.

The spelling of 18164133397 in words is "eighteen billion, one hundred sixty-four million, one hundred thirty-three thousand, three hundred ninety-seven".