2509674021 has 6 divisors (see below), whose sum is σ = 3625084710. Its totient is φ = 1673116008.

The previous prime is 2509673983. The next prime is 2509674029. The reversal of 2509674021 is 1204769052.

It can be written as a sum of positive squares in only one way, i.e., 1337364900 + 1172309121 = 36570^2 + 34239^2 .

It is not a de Polignac number, because 2509674021 - 2¹¹ = 2509671973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2509674029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139426326 + ... + 139426343.

It is an arithmetic number, because the mean of its divisors is an integer number (604180785).

Almost surely, 2^2509674021 is an apocalyptic number.

It is an amenable number.

2509674021 is a deficient number, since it is larger than the sum of its proper divisors (1115410689).

2509674021 is a wasteful number, since it uses less digits than its factorization.

2509674021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278852675 (or 278852672 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 2509674021 is about 50096.6468039529. The cubic root of 2509674021 is about 1358.9571772669.

The spelling of 2509674021 in words is "two billion, five hundred nine million, six hundred seventy-four thousand, twenty-one".