2278372522 has 4 divisors (see below), whose sum is σ = 3417558786. Its totient is φ = 1139186260.

The previous prime is 2278372519. The next prime is 2278372529. The reversal of 2278372522 is 2252738722.

2278372522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1272277561 + 1006094961 = 35669^2 + 31719^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2278372529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569593129 + ... + 569593132.

Almost surely, 2^2278372522 is an apocalyptic number.

2278372522 is a deficient number, since it is larger than the sum of its proper divisors (1139186264).

2278372522 is a wasteful number, since it uses less digits than its factorization.

2278372522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139186263.

The product of its digits is 188160, while the sum is 40.

The square root of 2278372522 is about 47732.3006149924. The cubic root of 2278372522 is about 1315.8556353650.

The spelling of 2278372522 in words is "two billion, two hundred seventy-eight million, three hundred seventy-two thousand, five hundred twenty-two".