3188778355 has 16 divisors (see below), whose sum is σ = 4444876224. Its totient is φ = 2150743680.

The previous prime is 3188778343. The next prime is 3188778367. The reversal of 3188778355 is 5538778813.

It is an interprime number because it is at equal distance from previous prime (3188778343) and next prime (3188778367).

It is not a de Polignac number, because 3188778355 - 2⁹ = 3188777843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3188778296 and 3188778305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 744652 + ... + 748921.

It is an arithmetic number, because the mean of its divisors is an integer number (277804764).

Almost surely, 2^3188778355 is an apocalyptic number.

3188778355 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3188778355 is a deficient number, since it is larger than the sum of its proper divisors (1256097869).

3188778355 is a wasteful number, since it uses less digits than its factorization.

3188778355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493646.

The product of its digits is 5644800, while the sum is 55.

The square root of 3188778355 is about 56469.2691204694. The cubic root of 3188778355 is about 1471.8880447784. Note that the first 3 decimals are identical.

The spelling of 3188778355 in words is "three billion, one hundred eighty-eight million, seven hundred seventy-eight thousand, three hundred fifty-five".