1865112966 has 48 divisors (see below), whose sum is σ = 4202299920. Its totient is φ = 620752248.

The previous prime is 1865112961. The next prime is 1865112967. The reversal of 1865112966 is 6692115681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1865112961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2855896 + ... + 2856548.

It is an arithmetic number, because the mean of its divisors is an integer number (87547915).

Almost surely, 2^1865112966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1865112966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2101149960).

1865112966 is an abundant number, since it is smaller than the sum of its proper divisors (2337186954).

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

1865112966 is an frugal number, since it uses more digits than its factorization.

1865112966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329 (or 658 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 1865112966 is about 43186.9536550102. The cubic root of 1865112966 is about 1230.9347920611.

The spelling of 1865112966 in words is "one billion, eight hundred sixty-five million, one hundred twelve thousand, nine hundred sixty-six".