378403685 has 16 divisors (see below), whose sum is σ = 498415680. Its totient is φ = 273507840.

The previous prime is 378403633. The next prime is 378403691. The reversal of 378403685 is 586304873.

It is not a de Polignac number, because 378403685 - 2⁶ = 378403621 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12140 + ... + 30069.

It is an arithmetic number, because the mean of its divisors is an integer number (31150980).

Almost surely, 2^378403685 is an apocalyptic number.

It is an amenable number.

378403685 is a deficient number, since it is larger than the sum of its proper divisors (120011995).

378403685 is a wasteful number, since it uses less digits than its factorization.

378403685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42388.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 378403685 is about 19452.6009829020. The cubic root of 378403685 is about 723.2999787593.

The spelling of 378403685 in words is "three hundred seventy-eight million, four hundred three thousand, six hundred eighty-five".