83481231890 has 24 divisors (see below), whose sum is σ = 174799478412. Its totient is φ = 28622136480.

The previous prime is 83481231877. The next prime is 83481231919. The reversal of 83481231890 is 9813218438.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 67041119929 + 16440111961 = 258923^2 + 128219^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85184441 + ... + 85185420.

Almost surely, 2^83481231890 is an apocalyptic number.

83481231890 is an abundant number, since it is smaller than the sum of its proper divisors (91318246522).

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

83481231890 is a wasteful number, since it uses less digits than its factorization.

83481231890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170369882 (or 170369875 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 47.

The spelling of 83481231890 in words is "eighty-three billion, four hundred eighty-one million, two hundred thirty-one thousand, eight hundred ninety".