1085998167 has 12 divisors (see below), whose sum is σ = 1574330680. Its totient is φ = 721383408.

The previous prime is 1085998163. The next prime is 1085998171. The reversal of 1085998167 is 7618995801.

It is an interprime number because it is at equal distance from previous prime (1085998163) and next prime (1085998171).

It is not a de Polignac number, because 1085998167 - 2² = 1085998163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085998163) 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 11 ways as a sum of consecutive naturals, for example, 215317 + ... + 220302.

Almost surely, 2^1085998167 is an apocalyptic number.

1085998167 is a deficient number, since it is larger than the sum of its proper divisors (488332513).

1085998167 is a wasteful number, since it uses less digits than its factorization.

1085998167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435902 (or 435899 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 54.

The square root of 1085998167 is about 32954.4862954955. The cubic root of 1085998167 is about 1027.8814553282.

The spelling of 1085998167 in words is "one billion, eighty-five million, nine hundred ninety-eight thousand, one hundred sixty-seven".