2278152565 has 16 divisors (see below), whose sum is σ = 3045596400. Its totient is φ = 1624315392.

The previous prime is 2278152563. The next prime is 2278152571. The reversal of 2278152565 is 5652518722.

It can be written as a sum of positive squares in 8 ways, for example, as 725871364 + 1552281201 = 26942^2 + 39399^2 .

It is a cyclic number.

It is not a de Polignac number, because 2278152565 - 2¹ = 2278152563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278152563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602400 + ... + 606169.

It is an arithmetic number, because the mean of its divisors is an integer number (190349775).

Almost surely, 2^2278152565 is an apocalyptic number.

It is an amenable number.

2278152565 is a deficient number, since it is larger than the sum of its proper divisors (767443835).

2278152565 is a wasteful number, since it uses less digits than its factorization.

2278152565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208616.

The product of its digits is 336000, while the sum is 43.

The square root of 2278152565 is about 47729.9964906766. The cubic root of 2278152565 is about 1315.8132892064.

The spelling of 2278152565 in words is "two billion, two hundred seventy-eight million, one hundred fifty-two thousand, five hundred sixty-five".