18134351237 has 8 divisors (see below), whose sum is σ = 18642784800. Its totient is φ = 17626881744.

The previous prime is 18134351233. The next prime is 18134351243. The reversal of 18134351237 is 73215343181.

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 18134351237 - 2² = 18134351233 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 18134351237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18134351233) 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, 202787 + ... + 278192.

It is an arithmetic number, because the mean of its divisors is an integer number (2330348100).

Almost surely, 2^18134351237 is an apocalyptic number.

It is an amenable number.

18134351237 is a deficient number, since it is larger than the sum of its proper divisors (508433563).

18134351237 is a wasteful number, since it uses less digits than its factorization.

18134351237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482035.

The product of its digits is 60480, while the sum is 38.

The spelling of 18134351237 in words is "eighteen billion, one hundred thirty-four million, three hundred fifty-one thousand, two hundred thirty-seven".