3915778223 has 4 divisors (see below), whose sum is σ = 4475175120. Its totient is φ = 3356381328.

The previous prime is 3915778219. The next prime is 3915778271. The reversal of 3915778223 is 3228775193.

3915778223 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.

It is a cyclic number.

It is not a de Polignac number, because 3915778223 - 2² = 3915778219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3915718223) 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, 279698438 + ... + 279698451.

It is an arithmetic number, because the mean of its divisors is an integer number (1118793780).

Almost surely, 2^3915778223 is an apocalyptic number.

3915778223 is a deficient number, since it is larger than the sum of its proper divisors (559396897).

3915778223 is an equidigital number, since it uses as much as digits as its factorization.

3915778223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559396896.

The product of its digits is 635040, while the sum is 47.

The square root of 3915778223 is about 62576.1793576438. The cubic root of 3915778223 is about 1576.1807855549.

The spelling of 3915778223 in words is "three billion, nine hundred fifteen million, seven hundred seventy-eight thousand, two hundred twenty-three".