2278372529 has 2 divisors, whose sum is σ = 2278372530. Its totient is φ = 2278372528.

The previous prime is 2278372519. The next prime is 2278372541. The reversal of 2278372529 is 9252738722.

It is a happy number.

2278372529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1517881600 + 760490929 = 38960^2 + 27577^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2278372529 is a prime.

It is not a weakly prime, because it can be changed into another prime (2278372519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139186264 + 1139186265.

It is an arithmetic number, because the mean of its divisors is an integer number (1139186265).

Almost surely, 2^2278372529 is an apocalyptic number.

It is an amenable number.

2278372529 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278372529 is an equidigital number, since it uses as much as digits as its factorization.

2278372529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 47.

The square root of 2278372529 is about 47732.3006883180. The cubic root of 2278372529 is about 1315.8556367126.

The spelling of 2278372529 in words is "two billion, two hundred seventy-eight million, three hundred seventy-two thousand, five hundred twenty-nine".