18378126234237 has 32 divisors (see below), whose sum is σ = 30551046856704. Its totient is φ = 9546954984000.

The previous prime is 18378126234217. The next prime is 18378126234277. The reversal of 18378126234237 is 73243262187381.

It is a happy number.

It is not a de Polignac number, because 18378126234237 - 2¹⁹ = 18378125709949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18378126234217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18960487 + ... + 19906187.

It is an arithmetic number, because the mean of its divisors is an integer number (954720214272).

Almost surely, 2^{18378126234237} is an apocalyptic number.

It is an amenable number.

18378126234237 is a deficient number, since it is larger than the sum of its proper divisors (12172920622467).

18378126234237 is a wasteful number, since it uses less digits than its factorization.

18378126234237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029849.

The product of its digits is 16257024, while the sum is 57.

The spelling of 18378126234237 in words is "eighteen trillion, three hundred seventy-eight billion, one hundred twenty-six million, two hundred thirty-four thousand, two hundred thirty-seven".