2182278788 has 6 divisors (see below), whose sum is σ = 3818987886. Its totient is φ = 1091139392.

The previous prime is 2182278781. The next prime is 2182278799. The reversal of 2182278788 is 8878722812.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1542289984 + 639988804 = 39272^2 + 25298^2 .

It is not an unprimeable number, because it can be changed into a prime (2182278781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272784845 + ... + 272784852.

It is an arithmetic number, because the mean of its divisors is an integer number (636497981).

Almost surely, 2^2182278788 is an apocalyptic number.

It is an amenable number.

2182278788 is a deficient number, since it is larger than the sum of its proper divisors (1636709098).

2182278788 is a wasteful number, since it uses less digits than its factorization.

2182278788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545569701 (or 545569699 counting only the distinct ones).

The product of its digits is 1605632, while the sum is 53.

The square root of 2182278788 is about 46714.8668841087. The cubic root of 2182278788 is about 1297.0898983724.

The spelling of 2182278788 in words is "two billion, one hundred eighty-two million, two hundred seventy-eight thousand, seven hundred eighty-eight".