1167681618 has 96 divisors (see below), whose sum is σ = 2810650752. Its totient is φ = 348480000.

The previous prime is 1167681617. The next prime is 1167681629. The reversal of 1167681618 is 8161867611.

It is a super-2 number, since 2×1167681618² = 2726960722030195848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1167681611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1766208 + ... + 1766868.

It is an arithmetic number, because the mean of its divisors is an integer number (29277612).

Almost surely, 2^1167681618 is an apocalyptic number.

1167681618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1167681618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1405325376).

1167681618 is an abundant number, since it is smaller than the sum of its proper divisors (1642969134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1167681618 is a wasteful number, since it uses less digits than its factorization.

1167681618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960 (or 957 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 1167681618 is about 34171.3566894848. The cubic root of 1167681618 is about 1053.0317872023.

The spelling of 1167681618 in words is "one billion, one hundred sixty-seven million, six hundred eighty-one thousand, six hundred eighteen".