273573979849 has 9 divisors (see below), whose sum is σ = 285998230119. Its totient is φ = 261667952040.

The previous prime is 273573979831. The next prime is 273573979907. The reversal of 273573979849 is 948979375372.

The square root of 273573979849 is 523043.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 22633096249 + 250940883600 = 150443^2 + 500940^2 .

It is not a de Polignac number, because 273573979849 - 2⁵ = 273573979817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (273573979829) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12018619 + ... + 12041359.

Almost surely, 2^273573979849 is an apocalyptic number.

273573979849 is the 523043-rd square number.

273573979849 is the 261522-nd centered octagonal number.

It is an amenable number.

273573979849 is a deficient number, since it is larger than the sum of its proper divisors (12424250270).

273573979849 is an frugal number, since it uses more digits than its factorization.

273573979849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45528 (or 22764 counting only the distinct ones).

The product of its digits is 720135360, while the sum is 73.

The spelling of 273573979849 in words is "two hundred seventy-three billion, five hundred seventy-three million, nine hundred seventy-nine thousand, eight hundred forty-nine".