2545684730 has 16 divisors (see below), whose sum is σ = 4706077320. Its totient is φ = 990752832.

The previous prime is 2545684727. The next prime is 2545684763. The reversal of 2545684730 is 374865452.

It can be written as a sum of positive squares in 4 ways, for example, as 2486717689 + 58967041 = 49867^2 + 7679^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3439745 + ... + 3440484.

Almost surely, 2^2545684730 is an apocalyptic number.

2545684730 is a deficient number, since it is larger than the sum of its proper divisors (2160392590).

2545684730 is a wasteful number, since it uses less digits than its factorization.

2545684730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6880273.

The product of its (nonzero) digits is 806400, while the sum is 44.

The square root of 2545684730 is about 50454.7790600653. The cubic root of 2545684730 is about 1365.4261180420.

The spelling of 2545684730 in words is "two billion, five hundred forty-five million, six hundred eighty-four thousand, seven hundred thirty".