18070387 has 8 divisors (see below), whose sum is σ = 19848960. Its totient is φ = 16374600.

The previous prime is 18070379. The next prime is 18070391. The reversal of 18070387 is 78307081.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18070387 - 2³ = 18070379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18070187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20239 + ... + 21112.

It is an arithmetic number, because the mean of its divisors is an integer number (2481120).

Almost surely, 2^18070387 is an apocalyptic number.

18070387 is a deficient number, since it is larger than the sum of its proper divisors (1778573).

18070387 is a wasteful number, since it uses less digits than its factorization.

18070387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41393.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 18070387 is about 4250.9277810850. The cubic root of 18070387 is about 262.4152990519.

The spelling of 18070387 in words is "eighteen million, seventy thousand, three hundred eighty-seven".