3978846953 has 4 divisors (see below), whose sum is σ = 3978973440. Its totient is φ = 3978720468.

The previous prime is 3978846877. The next prime is 3978846961. The reversal of 3978846953 is 3596488793.

3978846953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3596488793 = 35797 ⋅100469.

It is a cyclic number.

It is not a de Polignac number, because 3978846953 - 2²⁴ = 3962069737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3978846973) 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, 24776 + ... + 92582.

It is an arithmetic number, because the mean of its divisors is an integer number (994743360).

Almost surely, 2^3978846953 is an apocalyptic number.

It is an amenable number.

3978846953 is a deficient number, since it is larger than the sum of its proper divisors (126487).

3978846953 is an equidigital number, since it uses as much as digits as its factorization.

3978846953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126486.

The product of its digits is 39191040, while the sum is 62.

The square root of 3978846953 is about 63078.1020085418. The cubic root of 3978846953 is about 1584.5979074704.

The spelling of 3978846953 in words is "three billion, nine hundred seventy-eight million, eight hundred forty-six thousand, nine hundred fifty-three".