2773629945 has 40 divisors (see below), whose sum is σ = 4992626496. Its totient is φ = 1479216816.

The previous prime is 2773629913. The next prime is 2773629967. The reversal of 2773629945 is 5499263772.

2773629945 is a `hidden beast` number, since 2 + 7 + 7 + 3 + 629 + 9 + 4 + 5 = 666.

It is not a de Polignac number, because 2773629945 - 2⁵ = 2773629913 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2773629891 and 2773629900.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 84324 + ... + 112506.

Almost surely, 2^2773629945 is an apocalyptic number.

It is an amenable number.

2773629945 is a deficient number, since it is larger than the sum of its proper divisors (2218996551).

2773629945 is an frugal number, since it uses more digits than its factorization.

2773629945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28215 (or 28191 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The square root of 2773629945 is about 52665.2631722277. The cubic root of 2773629945 is about 1405.0210767556.

The spelling of 2773629945 in words is "two billion, seven hundred seventy-three million, six hundred twenty-nine thousand, nine hundred forty-five".