49894961593 has 4 divisors (see below), whose sum is σ = 51615477540. Its totient is φ = 48174445648.

The previous prime is 49894961587. The next prime is 49894961639. The reversal of 49894961593 is 39516949894.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39516949894 = 2 ⋅19758474947.

It can be written as a sum of positive squares in 2 ways, for example, as 37105161129 + 12789800464 = 192627^2 + 113092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49894961593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49894961693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860257930 + ... + 860257987.

It is an arithmetic number, because the mean of its divisors is an integer number (12903869385).

Almost surely, 2^49894961593 is an apocalyptic number.

It is an amenable number.

49894961593 is a deficient number, since it is larger than the sum of its proper divisors (1720515947).

49894961593 is a wasteful number, since it uses less digits than its factorization.

49894961593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720515946.

The product of its digits is 75582720, while the sum is 67.

The spelling of 49894961593 in words is "forty-nine billion, eight hundred ninety-four million, nine hundred sixty-one thousand, five hundred ninety-three".