1985496574170 has 16 divisors (see below), whose sum is σ = 4765191778080. Its totient is φ = 529465753104.

The previous prime is 1985496574123. The next prime is 1985496574247. The reversal of 1985496574170 is 714756945891.

It is a super-2 number, since 2×1985496574170² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33091609540 + ... + 33091609599.

It is an arithmetic number, because the mean of its divisors is an integer number (297824486130).

Almost surely, 2^{1985496574170} is an apocalyptic number.

1985496574170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1985496574170 is an abundant number, since it is smaller than the sum of its proper divisors (2779695203910).

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

1985496574170 is a wasteful number, since it uses less digits than its factorization.

1985496574170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66183219149.

The product of its (nonzero) digits is 76204800, while the sum is 66.

The spelling of 1985496574170 in words is "one trillion, nine hundred eighty-five billion, four hundred ninety-six million, five hundred seventy-four thousand, one hundred seventy".