2723973545 has 4 divisors (see below), whose sum is σ = 3268768260. Its totient is φ = 2179178832.

The previous prime is 2723973523. The next prime is 2723973587. The reversal of 2723973545 is 5453793272.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2129637904 + 594335641 = 46148^2 + 24379^2 .

It is a cyclic number.

It is not a de Polignac number, because 2723973545 - 2⁸ = 2723973289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2723973545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272397350 + ... + 272397359.

It is an arithmetic number, because the mean of its divisors is an integer number (817192065).

Almost surely, 2^2723973545 is an apocalyptic number.

It is an amenable number.

2723973545 is a deficient number, since it is larger than the sum of its proper divisors (544794715).

2723973545 is an equidigital number, since it uses as much as digits as its factorization.

2723973545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544794714.

The product of its digits is 1587600, while the sum is 47.

The square root of 2723973545 is about 52191.6999627335. The cubic root of 2723973545 is about 1396.5858209182.

The spelling of 2723973545 in words is "two billion, seven hundred twenty-three million, nine hundred seventy-three thousand, five hundred forty-five".