172883818849 has 9 divisors (see below), whose sum is σ = 201113134257. Its totient is φ = 148183635684.

The previous prime is 172883818847. The next prime is 172883818853. The reversal of 172883818849 is 948818388271.

The square root of 172883818849 is 415793.

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

It is not a de Polignac number, because 172883818849 - 2¹ = 172883818847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172883818847) 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, 2880852 + ... + 2940250.

Almost surely, 2^172883818849 is an apocalyptic number.

172883818849 is the 415793-rd square number.

172883818849 is the 207897-th centered octagonal number.

It is an amenable number.

172883818849 is a deficient number, since it is larger than the sum of its proper divisors (28229315408).

172883818849 is an frugal number, since it uses more digits than its factorization.

172883818849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118812 (or 59406 counting only the distinct ones).

The product of its digits is 49545216, while the sum is 67.

The spelling of 172883818849 in words is "one hundred seventy-two billion, eight hundred eighty-three million, eight hundred eighteen thousand, eight hundred forty-nine".