2789745901 has 4 divisors (see below), whose sum is σ = 2789851804. Its totient is φ = 2789640000.

The previous prime is 2789745887. The next prime is 2789745913. The reversal of 2789745901 is 1095479872.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 879181801 + 1910564100 = 29651^2 + 43710^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2789745901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2789745961) 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, 20851 + ... + 77551.

It is an arithmetic number, because the mean of its divisors is an integer number (697462951).

Almost surely, 2^2789745901 is an apocalyptic number.

It is an amenable number.

2789745901 is a deficient number, since it is larger than the sum of its proper divisors (105903).

2789745901 is an equidigital number, since it uses as much as digits as its factorization.

2789745901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105902.

The product of its (nonzero) digits is 1270080, while the sum is 52.

The square root of 2789745901 is about 52818.0452213067. The cubic root of 2789745901 is about 1407.7370775326.

The spelling of 2789745901 in words is "two billion, seven hundred eighty-nine million, seven hundred forty-five thousand, nine hundred one".