49918681 has 12 divisors (see below), whose sum is σ = 55824880. Its totient is φ = 44504640.

The previous prime is 49918669. The next prime is 49918691. The reversal of 49918681 is 18681994.

It is not a de Polignac number, because 49918681 - 2¹⁹ = 49394393 is a prime.

It is a super-2 number, since 2×49918681² = 4983749425559522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49918601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 946 + ... + 10036.

Almost surely, 2^49918681 is an apocalyptic number.

It is an amenable number.

49918681 is a deficient number, since it is larger than the sum of its proper divisors (5906199).

49918681 is a wasteful number, since it uses less digits than its factorization.

49918681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9144 (or 9127 counting only the distinct ones).

The product of its digits is 124416, while the sum is 46.

The square root of 49918681 is about 7065.3153503577. The cubic root of 49918681 is about 368.2033203203.

The spelling of 49918681 in words is "forty-nine million, nine hundred eighteen thousand, six hundred eighty-one".