2780749970 has 64 divisors (see below), whose sum is σ = 5329981440. Its totient is φ = 1042675200.

The previous prime is 2780749897. The next prime is 2780749973. The reversal of 2780749970 is 799470872.

2780749970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2780749973) 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, 3221759 + ... + 3222621.

It is an arithmetic number, because the mean of its divisors is an integer number (83280960).

Almost surely, 2^2780749970 is an apocalyptic number.

2780749970 is a deficient number, since it is larger than the sum of its proper divisors (2549231470).

2780749970 is a wasteful number, since it uses less digits than its factorization.

2780749970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The square root of 2780749970 is about 52732.8168221649. The cubic root of 2780749970 is about 1406.2222989243. Note that the first 4 decimals are identical.

It can be divided in two parts, 27807 and 49970, that added together give a palindrome (77777).

The spelling of 2780749970 in words is "two billion, seven hundred eighty million, seven hundred forty-nine thousand, nine hundred seventy".