49472364181 has 4 divisors (see below), whose sum is σ = 49982388652. Its totient is φ = 48962339712.

The previous prime is 49472364169. The next prime is 49472364239. The reversal of 49472364181 is 18146327494.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18146327494 = 2 ⋅9073163747.

It can be written as a sum of positive squares in 2 ways, for example, as 18013666225 + 31458697956 = 134215^2 + 177366^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49472364181 is a prime.

It is a super-2 number, since 2×49472364181² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49472364121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255012090 + ... + 255012283.

It is an arithmetic number, because the mean of its divisors is an integer number (12495597163).

Almost surely, 2^49472364181 is an apocalyptic number.

It is an amenable number.

49472364181 is a deficient number, since it is larger than the sum of its proper divisors (510024471).

49472364181 is an equidigital number, since it uses as much as digits as its factorization.

49472364181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510024470.

The product of its digits is 1161216, while the sum is 49.

The spelling of 49472364181 in words is "forty-nine billion, four hundred seventy-two million, three hundred sixty-four thousand, one hundred eighty-one".