49852618729 has 3 divisors (see below), whose sum is σ = 49852842007. Its totient is φ = 49852395452.

The previous prime is 49852618727. The next prime is 49852618733. The reversal of 49852618729 is 92781625894.

The square root of 49852618729 is 223277.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 35703992025 + 14148626704 = 188955^2 + 118948^2 .

It is not a de Polignac number, because 49852618729 - 2¹ = 49852618727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49852618727) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 111639 + ... + 334915.

Almost surely, 2^49852618729 is an apocalyptic number.

49852618729 is the 223277-th square number.

49852618729 is the 111639-th centered octagonal number.

It is an amenable number.

49852618729 is a deficient number, since it is larger than the sum of its proper divisors (223278).

49852618729 is an frugal number, since it uses more digits than its factorization.

49852618729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446554 (or 223277 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 61.

The spelling of 49852618729 in words is "forty-nine billion, eight hundred fifty-two million, six hundred eighteen thousand, seven hundred twenty-nine".