18061538837 has 8 divisors (see below), whose sum is σ = 19130371200. Its totient is φ = 16993416384.

The previous prime is 18061538827. The next prime is 18061538839. The reversal of 18061538837 is 73883516081.

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 18061538837 - 2¹⁸ = 18061276693 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 (18061538839) 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, 124637 + ... + 227282.

It is an arithmetic number, because the mean of its divisors is an integer number (2391296400).

Almost surely, 2^18061538837 is an apocalyptic number.

18061538837 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

18061538837 is a deficient number, since it is larger than the sum of its proper divisors (1068832363).

18061538837 is a wasteful number, since it uses less digits than its factorization.

18061538837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354955.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 18061538837 in words is "eighteen billion, sixty-one million, five hundred thirty-eight thousand, eight hundred thirty-seven".