2181477307 has 2 divisors, whose sum is σ = 2181477308. Its totient is φ = 2181477306.

The previous prime is 2181477253. The next prime is 2181477359. The reversal of 2181477307 is 7037741812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2181477307 - 2¹¹ = 2181475259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2181477307.

It is not a weakly prime, because it can be changed into another prime (2181477367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090738653 + 1090738654.

It is an arithmetic number, because the mean of its divisors is an integer number (1090738654).

Almost surely, 2^2181477307 is an apocalyptic number.

2181477307 is a deficient number, since it is larger than the sum of its proper divisors (1).

2181477307 is an equidigital number, since it uses as much as digits as its factorization.

2181477307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 2181477307 is about 46706.2876602284. The cubic root of 2181477307 is about 1296.9310857571.

The spelling of 2181477307 in words is "two billion, one hundred eighty-one million, four hundred seventy-seven thousand, three hundred seven".