2194879545 has 32 divisors (see below), whose sum is σ = 3924604800. Its totient is φ = 1163823552.

The previous prime is 2194879523. The next prime is 2194879549. The reversal of 2194879545 is 5459784912.

It is a happy number.

2194879545 is a `hidden beast` number, since 2 + 1 + 94 + 8 + 7 + 9 + 545 = 666.

It is not a de Polignac number, because 2194879545 - 2⁷ = 2194879417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2194879491 and 2194879500.

It is not an unprimeable number, because it can be changed into a prime (2194879549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23635 + ... + 70344.

It is an arithmetic number, because the mean of its divisors is an integer number (122643900).

Almost surely, 2^2194879545 is an apocalyptic number.

It is an amenable number.

2194879545 is a deficient number, since it is larger than the sum of its proper divisors (1729725255).

2194879545 is a wasteful number, since it uses less digits than its factorization.

2194879545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94166 (or 94160 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 2194879545 is about 46849.5415665938. The cubic root of 2194879545 is about 1299.5816296729.

The spelling of 2194879545 in words is "two billion, one hundred ninety-four million, eight hundred seventy-nine thousand, five hundred forty-five".