2861281365 has 16 divisors (see below), whose sum is σ = 4589476416. Its totient is φ = 1522208000.

The previous prime is 2861281363. The next prime is 2861281399. The reversal of 2861281365 is 5631821682.

It is not a de Polignac number, because 2861281365 - 2¹ = 2861281363 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861281363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231831 + ... + 243860.

It is an arithmetic number, because the mean of its divisors is an integer number (286842276).

Almost surely, 2^2861281365 is an apocalyptic number.

It is an amenable number.

2861281365 is a deficient number, since it is larger than the sum of its proper divisors (1728195051).

2861281365 is a wasteful number, since it uses less digits than its factorization.

2861281365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476100.

The product of its digits is 138240, while the sum is 42.

The square root of 2861281365 is about 53490.9465704244. The cubic root of 2861281365 is about 1419.6682034083.

The spelling of 2861281365 in words is "two billion, eight hundred sixty-one million, two hundred eighty-one thousand, three hundred sixty-five".