12437101819 has 4 divisors (see below), whose sum is σ = 12773239744. Its totient is φ = 12100963896.

The previous prime is 12437101771. The next prime is 12437101841. The reversal of 12437101819 is 91810173421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12437101819 - 2¹⁷ = 12436970747 is a prime.

It is a super-2 number, since 2×12437101819² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 336137887 = 12437101819 / (1 + 2 + 4 + 3 + 7 + 1 + 0 + 1 + 8 + 1 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12437101889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168068907 + ... + 168068980.

It is an arithmetic number, because the mean of its divisors is an integer number (3193309936).

Almost surely, 2^12437101819 is an apocalyptic number.

12437101819 is a deficient number, since it is larger than the sum of its proper divisors (336137925).

12437101819 is an equidigital number, since it uses as much as digits as its factorization.

12437101819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336137924.

The product of its (nonzero) digits is 12096, while the sum is 37.

The spelling of 12437101819 in words is "twelve billion, four hundred thirty-seven million, one hundred one thousand, eight hundred nineteen".