4919975991 has 16 divisors (see below), whose sum is σ = 8330118400. Its totient is φ = 2811414744.

The previous prime is 4919975989. The next prime is 4919976013. The reversal of 4919975991 is 1995799194.

4919975991 is a `hidden beast` number, since 491 + 9 + 9 + 7 + 59 + 91 = 666.

It is not a de Polignac number, because 4919975991 - 2¹ = 4919975989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4919975941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13015621 + ... + 13015998.

It is an arithmetic number, because the mean of its divisors is an integer number (520632400).

Almost surely, 2^4919975991 is an apocalyptic number.

4919975991 is a deficient number, since it is larger than the sum of its proper divisors (3410142409).

4919975991 is a wasteful number, since it uses less digits than its factorization.

4919975991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26031635 (or 26031629 counting only the distinct ones).

The product of its digits is 8266860, while the sum is 63.

The square root of 4919975991 is about 70142.5405228525. The cubic root of 4919975991 is about 1700.8042320479.

The spelling of 4919975991 in words is "four billion, nine hundred nineteen million, nine hundred seventy-five thousand, nine hundred ninety-one".