2545445686 has 8 divisors (see below), whose sum is σ = 4363621200. Its totient is φ = 1090905288.

The previous prime is 2545445677. The next prime is 2545445689. The reversal of 2545445686 is 6865445452.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545445689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90908761 + ... + 90908788.

It is an arithmetic number, because the mean of its divisors is an integer number (545452650).

Almost surely, 2^2545445686 is an apocalyptic number.

2545445686 is a deficient number, since it is larger than the sum of its proper divisors (1818175514).

2545445686 is a wasteful number, since it uses less digits than its factorization.

2545445686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181817558.

The product of its digits is 4608000, while the sum is 49.

The square root of 2545445686 is about 50452.4101109154. The cubic root of 2545445686 is about 1365.3833781151.

The spelling of 2545445686 in words is "two billion, five hundred forty-five million, four hundred forty-five thousand, six hundred eighty-six".