985481917158 has 16 divisors (see below), whose sum is σ = 1970974437696. Its totient is φ = 328492205160.

The previous prime is 985481917157. The next prime is 985481917181. The reversal of 985481917158 is 851719184589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985481917157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1286485 + ... + 1904207.

It is an arithmetic number, because the mean of its divisors is an integer number (123185902356).

Almost surely, 2^985481917158 is an apocalyptic number.

985481917158 is an abundant number, since it is smaller than the sum of its proper divisors (985492520538).

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

985481917158 is a wasteful number, since it uses less digits than its factorization.

985481917158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883619.

The product of its digits is 29030400, while the sum is 66.

The spelling of 985481917158 in words is "nine hundred eighty-five billion, four hundred eighty-one million, nine hundred seventeen thousand, one hundred fifty-eight".