2287239813 has 6 divisors (see below), whose sum is σ = 3303790854. Its totient is φ = 1524826536.

The previous prime is 2287239809. The next prime is 2287239827. The reversal of 2287239813 is 3189327822.

It can be written as a sum of positive squares in only one way, i.e., 2275003809 + 12236004 = 47697^2 + 3498^2 .

It is not a de Polignac number, because 2287239813 - 2² = 2287239809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2287239803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 127068870 + ... + 127068887.

It is an arithmetic number, because the mean of its divisors is an integer number (550631809).

Almost surely, 2^2287239813 is an apocalyptic number.

It is an amenable number.

2287239813 is a deficient number, since it is larger than the sum of its proper divisors (1016551041).

2287239813 is a wasteful number, since it uses less digits than its factorization.

2287239813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254137763 (or 254137760 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 2287239813 is about 47825.0960584503. The cubic root of 2287239813 is about 1317.5605029423.

The spelling of 2287239813 in words is "two billion, two hundred eighty-seven million, two hundred thirty-nine thousand, eight hundred thirteen".