3924978145 has 8 divisors (see below), whose sum is σ = 5138153280. Its totient is φ = 2854529520.

The previous prime is 3924978097. The next prime is 3924978157. The reversal of 3924978145 is 5418794293.

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

It is not a de Polignac number, because 3924978145 - 2⁹ = 3924977633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3924978092 and 3924978101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35681565 + ... + 35681674.

It is an arithmetic number, because the mean of its divisors is an integer number (642269160).

Almost surely, 2^3924978145 is an apocalyptic number.

It is an amenable number.

3924978145 is a deficient number, since it is larger than the sum of its proper divisors (1213175135).

3924978145 is a wasteful number, since it uses less digits than its factorization.

3924978145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71363255.

The product of its digits is 2177280, while the sum is 52.

The square root of 3924978145 is about 62649.6460085769. The cubic root of 3924978145 is about 1577.4142056661.

The spelling of 3924978145 in words is "three billion, nine hundred twenty-four million, nine hundred seventy-eight thousand, one hundred forty-five".