378505605 has 8 divisors (see below), whose sum is σ = 605608992. Its totient is φ = 201869648.

The previous prime is 378505583. The next prime is 378505607. The reversal of 378505605 is 506505873.

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

It is a cyclic number.

It is not a de Polignac number, because 378505605 - 2¹⁸ = 378243461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378505607) 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, 12616839 + ... + 12616868.

It is an arithmetic number, because the mean of its divisors is an integer number (75701124).

Almost surely, 2^378505605 is an apocalyptic number.

It is an amenable number.

378505605 is a deficient number, since it is larger than the sum of its proper divisors (227103387).

378505605 is a wasteful number, since it uses less digits than its factorization.

378505605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25233715.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 378505605 is about 19455.2205076170. The cubic root of 378505605 is about 723.3649112809.

The spelling of 378505605 in words is "three hundred seventy-eight million, five hundred five thousand, six hundred five".