3141778879 has 4 divisors (see below), whose sum is σ = 3143832520. Its totient is φ = 3139725240.

The previous prime is 3141778853. The next prime is 3141778883. The reversal of 3141778879 is 9788771413.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3141778879 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 (3141778819) 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, 1024524 + ... + 1027585.

It is an arithmetic number, because the mean of its divisors is an integer number (785958130).

Almost surely, 2^3141778879 is an apocalyptic number.

3141778879 is a deficient number, since it is larger than the sum of its proper divisors (2053641).

3141778879 is a wasteful number, since it uses less digits than its factorization.

3141778879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053640.

The product of its digits is 2370816, while the sum is 55.

The square root of 3141778879 is about 56051.5733855884. The cubic root of 3141778879 is about 1464.6208260508.

The spelling of 3141778879 in words is "three billion, one hundred forty-one million, seven hundred seventy-eight thousand, eight hundred seventy-nine".