49181013 has 48 divisors (see below), whose sum is σ = 87185280. Its totient is φ = 27107136.

The previous prime is 49181009. The next prime is 49181021. The reversal of 49181013 is 31018194.

It is not a de Polignac number, because 49181013 - 2² = 49181009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49181003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48831 + ... + 49827.

It is an arithmetic number, because the mean of its divisors is an integer number (1816360).

Almost surely, 2^49181013 is an apocalyptic number.

It is an amenable number.

49181013 is a deficient number, since it is larger than the sum of its proper divisors (38004267).

49181013 is an equidigital number, since it uses as much as digits as its factorization.

49181013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 49181013 is about 7012.9175811498. The cubic root of 49181013 is about 366.3806172131.

The spelling of 49181013 in words is "forty-nine million, one hundred eighty-one thousand, thirteen".