49181138 has 8 divisors (see below), whose sum is σ = 75163788. Its totient is φ = 24126544.

The previous prime is 49181137. The next prime is 49181173. The reversal of 49181138 is 83118194.

It can be written as a sum of positive squares in 2 ways, for example, as 49042009 + 139129 = 7003^2 + 373^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 49181098 and 49181107.

It is not an unprimeable number, because it can be changed into a prime (49181137) 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, 231881 + ... + 232092.

Almost surely, 2^49181138 is an apocalyptic number.

49181138 is a deficient number, since it is larger than the sum of its proper divisors (25982650).

49181138 is a wasteful number, since it uses less digits than its factorization.

49181138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464028.

The product of its digits is 6912, while the sum is 35.

The square root of 49181138 is about 7012.9264932694. The cubic root of 49181138 is about 366.3809276143.

The spelling of 49181138 in words is "forty-nine million, one hundred eighty-one thousand, one hundred thirty-eight".