49198815 has 12 divisors (see below), whose sum is σ = 85278024. Its totient is φ = 26239344.

The previous prime is 49198813. The next prime is 49198859. The reversal of 49198815 is 51889194.

It is not a de Polignac number, because 49198815 - 2¹ = 49198813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1093307 = 49198815 / (4 + 9 + 1 + 9 + 8 + 8 + 1 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49198813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 546609 + ... + 546698.

It is an arithmetic number, because the mean of its divisors is an integer number (7106502).

Almost surely, 2^49198815 is an apocalyptic number.

49198815 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

49198815 is a deficient number, since it is larger than the sum of its proper divisors (36079209).

49198815 is a wasteful number, since it uses less digits than its factorization.

49198815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093318 (or 1093315 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 49198815 is about 7014.1866955478. The cubic root of 49198815 is about 366.4248180171.

The spelling of 49198815 in words is "forty-nine million, one hundred ninety-eight thousand, eight hundred fifteen".