2972828509 has 4 divisors (see below), whose sum is σ = 3397518304. Its totient is φ = 2548138716.

The previous prime is 2972828479. The next prime is 2972828531. The reversal of 2972828509 is 9058282792.

It is a happy number.

2972828509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2972828509 - 2⁹ = 2972827997 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 (2972828569) 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, 212344887 + ... + 212344900.

It is an arithmetic number, because the mean of its divisors is an integer number (849379576).

Almost surely, 2^2972828509 is an apocalyptic number.

It is an amenable number.

2972828509 is a deficient number, since it is larger than the sum of its proper divisors (424689795).

2972828509 is an equidigital number, since it uses as much as digits as its factorization.

2972828509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424689794.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The square root of 2972828509 is about 54523.6509140758. The cubic root of 2972828509 is about 1437.8821279658.

The spelling of 2972828509 in words is "two billion, nine hundred seventy-two million, eight hundred twenty-eight thousand, five hundred nine".