378459081 has 192 divisors, whose sum is σ = 810342400. Its totient is φ = 169361280.

The previous prime is 378459071. The next prime is 378459091. The reversal of 378459081 is 180954873.

It is an interprime number because it is at equal distance from previous prime (378459071) and next prime (378459091).

It is not a de Polignac number, because 378459081 - 2⁹ = 378458569 is a prime.

It is a super-2 number, since 2×378459081² = 286462551982729122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378459031) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5648610 + ... + 5648676.

Almost surely, 2^378459081 is an apocalyptic number.

It is an amenable number.

378459081 is an abundant number, since it is smaller than the sum of its proper divisors (431883319).

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

378459081 is a wasteful number, since it uses less digits than its factorization.

378459081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 378459081 is about 19454.0248020814. The cubic root of 378459081 is about 723.3352726110.

The spelling of 378459081 in words is "three hundred seventy-eight million, four hundred fifty-nine thousand, eighty-one".