3978113273 has 8 divisors (see below), whose sum is σ = 4152032136. Its totient is φ = 3807856000.

The previous prime is 3978113263. The next prime is 3978113297. The reversal of 3978113273 is 3723118793.

It can be written as a sum of positive squares in 4 ways, for example, as 643281769 + 3334831504 = 25363^2 + 57748^2 .

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 3978113273 - 2²² = 3973918969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3978113263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 913178 + ... + 917523.

It is an arithmetic number, because the mean of its divisors is an integer number (519004017).

Almost surely, 2^3978113273 is an apocalyptic number.

It is an amenable number.

3978113273 is a deficient number, since it is larger than the sum of its proper divisors (173918863).

3978113273 is a wasteful number, since it uses less digits than its factorization.

3978113273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830795.

The product of its digits is 190512, while the sum is 44.

The square root of 3978113273 is about 63072.2860930219. The cubic root of 3978113273 is about 1584.5005041043.

The spelling of 3978113273 in words is "three billion, nine hundred seventy-eight million, one hundred thirteen thousand, two hundred seventy-three".