378989490 has 32 divisors (see below), whose sum is σ = 992264256. Its totient is φ = 91876160.

The previous prime is 378989489. The next prime is 378989503. The reversal of 378989490 is 94989873.

It is a self number, because there is not a number n which added to its sum of digits gives 378989490.

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, 573897 + ... + 574556.

It is an arithmetic number, because the mean of its divisors is an integer number (31008258).

Almost surely, 2^378989490 is an apocalyptic number.

378989490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

378989490 is an abundant number, since it is smaller than the sum of its proper divisors (613274766).

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

378989490 is a wasteful number, since it uses less digits than its factorization.

378989490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148474.

The product of its (nonzero) digits is 3919104, while the sum is 57.

The square root of 378989490 is about 19467.6524008418. The cubic root of 378989490 is about 723.6730321055.

The spelling of 378989490 in words is "three hundred seventy-eight million, nine hundred eighty-nine thousand, four hundred ninety".