2239695861 has 16 divisors (see below), whose sum is σ = 3223859520. Its totient is φ = 1374894720.

The previous prime is 2239695827. The next prime is 2239695881. The reversal of 2239695861 is 1685969322.

It is not a de Polignac number, because 2239695861 - 2⁶ = 2239695797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2239695881) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 54255 + ... + 86156.

It is an arithmetic number, because the mean of its divisors is an integer number (201491220).

Almost surely, 2^2239695861 is an apocalyptic number.

It is an amenable number.

2239695861 is a deficient number, since it is larger than the sum of its proper divisors (984163659).

2239695861 is a wasteful number, since it uses less digits than its factorization.

2239695861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140836.

The product of its digits is 1399680, while the sum is 51.

The square root of 2239695861 is about 47325.4251011018. The cubic root of 2239695861 is about 1308.3673036072.

The spelling of 2239695861 in words is "two billion, two hundred thirty-nine million, six hundred ninety-five thousand, eight hundred sixty-one".