1865221062 has 64 divisors (see below), whose sum is σ = 4068092160. Its totient is φ = 567834624.

The previous prime is 1865221009. The next prime is 1865221093. The reversal of 1865221062 is 2601225681.

It is a super-2 number, since 2×1865221062² = 6958099220256815688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 713614 + ... + 716222.

It is an arithmetic number, because the mean of its divisors is an integer number (63563940).

Almost surely, 2^1865221062 is an apocalyptic number.

1865221062 is an abundant number, since it is smaller than the sum of its proper divisors (2202871098).

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

1865221062 is a wasteful number, since it uses less digits than its factorization.

1865221062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 1865221062 is about 43188.2051259369. The cubic root of 1865221062 is about 1230.9585719534.

The spelling of 1865221062 in words is "one billion, eight hundred sixty-five million, two hundred twenty-one thousand, sixty-two".