2278969745 has 8 divisors (see below), whose sum is σ = 2945130216. Its totient is φ = 1682931456.

The previous prime is 2278969741. The next prime is 2278969769. The reversal of 2278969745 is 5479698722.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 202435984 + 2076533761 = 14228^2 + 45569^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2278969745 - 2² = 2278969741 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2278969741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17530472 + ... + 17530601.

It is an arithmetic number, because the mean of its divisors is an integer number (368141277).

Almost surely, 2^2278969745 is an apocalyptic number.

It is an amenable number.

2278969745 is a deficient number, since it is larger than the sum of its proper divisors (666160471).

2278969745 is a wasteful number, since it uses less digits than its factorization.

2278969745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35061091.

The product of its digits is 15240960, while the sum is 59.

The square root of 2278969745 is about 47738.5561679446. The cubic root of 2278969745 is about 1315.9705990928.

The spelling of 2278969745 in words is "two billion, two hundred seventy-eight million, nine hundred sixty-nine thousand, seven hundred forty-five".