2972218145 has 8 divisors (see below), whose sum is σ = 3841020456. Its totient is φ = 2194868736.

The previous prime is 2972218097. The next prime is 2972218147. The reversal of 2972218145 is 5418122792.

It can be written as a sum of positive squares in 4 ways, for example, as 273207841 + 2699010304 = 16529^2 + 51952^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2972218145 - 2⁸ = 2972217889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2972218147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22863152 + ... + 22863281.

It is an arithmetic number, because the mean of its divisors is an integer number (480127557).

Almost surely, 2^2972218145 is an apocalyptic number.

It is an amenable number.

2972218145 is a deficient number, since it is larger than the sum of its proper divisors (868802311).

2972218145 is a wasteful number, since it uses less digits than its factorization.

2972218145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45726451.

The product of its digits is 80640, while the sum is 41.

The square root of 2972218145 is about 54518.0533860115. The cubic root of 2972218145 is about 1437.7837153424.

The spelling of 2972218145 in words is "two billion, nine hundred seventy-two million, two hundred eighteen thousand, one hundred forty-five".