12018507397 has 8 divisors (see below), whose sum is σ = 13360524800. Its totient is φ = 10736135280.

The previous prime is 12018507383. The next prime is 12018507427. The reversal of 12018507397 is 79370581021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12018507397 - 2⁷ = 12018507269 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 (12018507337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14910897 + ... + 14911702.

It is an arithmetic number, because the mean of its divisors is an integer number (1670065600).

Almost surely, 2^12018507397 is an apocalyptic number.

It is an amenable number.

12018507397 is a deficient number, since it is larger than the sum of its proper divisors (1342017403).

12018507397 is a wasteful number, since it uses less digits than its factorization.

12018507397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29822643.

The product of its (nonzero) digits is 105840, while the sum is 43.

The spelling of 12018507397 in words is "twelve billion, eighteen million, five hundred seven thousand, three hundred ninety-seven".