3188220378 has 24 divisors (see below), whose sum is σ = 7417492992. Its totient is φ = 910920024.

The previous prime is 3188220361. The next prime is 3188220401. The reversal of 3188220378 is 8730228813.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5421850 + ... + 5422437.

It is an arithmetic number, because the mean of its divisors is an integer number (309062208).

Almost surely, 2^3188220378 is an apocalyptic number.

3188220378 is an abundant number, since it is smaller than the sum of its proper divisors (4229272614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3188220378 is a wasteful number, since it uses less digits than its factorization.

3188220378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10844306 (or 10844299 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 3188220378 is about 56464.3283675632. The cubic root of 3188220378 is about 1471.8021887450.

The spelling of 3188220378 in words is "three billion, one hundred eighty-eight million, two hundred twenty thousand, three hundred seventy-eight".