4981923145 has 4 divisors (see below), whose sum is σ = 5978307780. Its totient is φ = 3985538512.

The previous prime is 4981923143. The next prime is 4981923173. The reversal of 4981923145 is 5413291894.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2184253696 + 2797669449 = 46736^2 + 52893^2 .

It is a cyclic number.

It is not a de Polignac number, because 4981923145 - 2¹ = 4981923143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4981923095 and 4981923104.

It is not an unprimeable number, because it can be changed into a prime (4981923143) 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, 498192310 + ... + 498192319.

It is an arithmetic number, because the mean of its divisors is an integer number (1494576945).

Almost surely, 2^4981923145 is an apocalyptic number.

It is an amenable number.

4981923145 is a deficient number, since it is larger than the sum of its proper divisors (996384635).

4981923145 is an equidigital number, since it uses as much as digits as its factorization.

4981923145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996384634.

The product of its digits is 311040, while the sum is 46.

The square root of 4981923145 is about 70582.7397102153. The cubic root of 4981923145 is about 1707.9127257563.

The spelling of 4981923145 in words is "four billion, nine hundred eighty-one million, nine hundred twenty-three thousand, one hundred forty-five".