378180989 has 4 divisors (see below), whose sum is σ = 378755520. Its totient is φ = 377606460.

The previous prime is 378180983. The next prime is 378181021. The reversal of 378180989 is 989081873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 378180989 - 2¹⁶ = 378115453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378180989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378180983) 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, 286277 + ... + 287594.

It is an arithmetic number, because the mean of its divisors is an integer number (94688880).

Almost surely, 2^378180989 is an apocalyptic number.

It is an amenable number.

378180989 is a deficient number, since it is larger than the sum of its proper divisors (574531).

378180989 is an equidigital number, since it uses as much as digits as its factorization.

378180989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574530.

The product of its (nonzero) digits is 870912, while the sum is 53.

The square root of 378180989 is about 19446.8760730355. The cubic root of 378180989 is about 723.1580601089.

The spelling of 378180989 in words is "three hundred seventy-eight million, one hundred eighty thousand, nine hundred eighty-nine".