1838274638215 has 16 divisors (see below), whose sum is σ = 2255170419072. Its totient is φ = 1437856536064.

The previous prime is 1838274638203. The next prime is 1838274638257. The reversal of 1838274638215 is 5128364728381.

It is a cyclic number.

It is not a de Polignac number, because 1838274638215 - 2⁷ = 1838274638087 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 1838274638215.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3773704 + ... + 4232893.

It is an arithmetic number, because the mean of its divisors is an integer number (140948151192).

Almost surely, 2^{1838274638215} is an apocalyptic number.

1838274638215 is a deficient number, since it is larger than the sum of its proper divisors (416895780857).

1838274638215 is an equidigital number, since it uses as much as digits as its factorization.

1838274638215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8007626.

The product of its digits is 15482880, while the sum is 58.

The spelling of 1838274638215 in words is "one trillion, eight hundred thirty-eight billion, two hundred seventy-four million, six hundred thirty-eight thousand, two hundred fifteen".