2981924405 has 8 divisors (see below), whose sum is σ = 3578823000. Its totient is φ = 2385197056.

The previous prime is 2981924399. The next prime is 2981924417. The reversal of 2981924405 is 5044291892.

It can be written as a sum of positive squares in 4 ways, for example, as 33651601 + 2948272804 = 5801^2 + 54298^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2981924405 - 2⁸ = 2981924149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740 + ... + 77229.

It is an arithmetic number, because the mean of its divisors is an integer number (447352875).

Almost surely, 2^2981924405 is an apocalyptic number.

It is an amenable number.

2981924405 is a deficient number, since it is larger than the sum of its proper divisors (596898595).

2981924405 is an equidigital number, since it uses as much as digits as its factorization.

2981924405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85623.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 2981924405 is about 54606.9995971212. Note that the first 3 decimals coincide. The cubic root of 2981924405 is about 1439.3471199634.

Adding to 2981924405 its sum of digits (44), we get a square (2981924449 = 54607²).

The spelling of 2981924405 in words is "two billion, nine hundred eighty-one million, nine hundred twenty-four thousand, four hundred five".