49191805 has 16 divisors (see below), whose sum is σ = 63907200. Its totient is φ = 36134208.

The previous prime is 49191797. The next prime is 49191827. The reversal of 49191805 is 50819194.

It is a cyclic number.

It is not a de Polignac number, because 49191805 - 2³ = 49191797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11034 + ... + 14836.

It is an arithmetic number, because the mean of its divisors is an integer number (3994200).

Almost surely, 2^49191805 is an apocalyptic number.

It is an amenable number.

49191805 is a deficient number, since it is larger than the sum of its proper divisors (14715395).

49191805 is a wasteful number, since it uses less digits than its factorization.

49191805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 49191805 is about 7013.6869761916. The cubic root of 49191805 is about 366.4074140750.

It can be divided in two parts, 4919 and 1805, that added together give a square (6724 = 82²).

The spelling of 49191805 in words is "forty-nine million, one hundred ninety-one thousand, eight hundred five".