378423861 has 8 divisors (see below), whose sum is σ = 504685440. Its totient is φ = 252222432.

The previous prime is 378423811. The next prime is 378423883. The reversal of 378423861 is 168324873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 378423861 - 2¹³ = 378415669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378423811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2601 + ... + 27633.

It is an arithmetic number, because the mean of its divisors is an integer number (63085680).

Almost surely, 2^378423861 is an apocalyptic number.

It is an amenable number.

378423861 is a deficient number, since it is larger than the sum of its proper divisors (126261579).

378423861 is a wasteful number, since it uses less digits than its factorization.

378423861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30075.

The product of its digits is 193536, while the sum is 42.

The square root of 378423861 is about 19453.1195698788. The cubic root of 378423861 is about 723.3128336738.

The spelling of 378423861 in words is "three hundred seventy-eight million, four hundred twenty-three thousand, eight hundred sixty-one".