1838108865767 has 16 divisors (see below), whose sum is σ = 1863600721920. Its totient is φ = 1812699007392.

The previous prime is 1838108865763. The next prime is 1838108865809. The reversal of 1838108865767 is 7675688018381.

It is a cyclic number.

It is not a de Polignac number, because 1838108865767 - 2² = 1838108865763 is a prime.

It is a super-2 number, since 2×1838108865767² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1838108865697 and 1838108865706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1838108865763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171989498 + ... + 172000184.

It is an arithmetic number, because the mean of its divisors is an integer number (116475045120).

Almost surely, 2^{1838108865767} is an apocalyptic number.

1838108865767 is a deficient number, since it is larger than the sum of its proper divisors (25491856153).

1838108865767 is a wasteful number, since it uses less digits than its factorization.

1838108865767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14302.

The product of its (nonzero) digits is 108380160, while the sum is 68.

The spelling of 1838108865767 in words is "one trillion, eight hundred thirty-eight billion, one hundred eight million, eight hundred sixty-five thousand, seven hundred sixty-seven".