378457605 has 24 divisors (see below), whose sum is σ = 662496120. Its totient is φ = 199843200.

The previous prime is 378457601. The next prime is 378457613. The reversal of 378457605 is 506754873.

378457605 is a `hidden beast` number, since 3 + 78 + 4 + 576 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 233447841 + 145009764 = 15279^2 + 12042^2 .

It is not a de Polignac number, because 378457605 - 2² = 378457601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378457601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37090 + ... + 46179.

It is an arithmetic number, because the mean of its divisors is an integer number (27604005).

Almost surely, 2^378457605 is an apocalyptic number.

It is an amenable number.

378457605 is a deficient number, since it is larger than the sum of its proper divisors (284038515).

378457605 is a wasteful number, since it uses less digits than its factorization.

378457605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83381 (or 83378 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The square root of 378457605 is about 19453.9868664498. The cubic root of 378457605 is about 723.3343322678.

It can be divided in two parts, 37845 and 7605, that multiplied together give a square (287811225 = 16965²).

The spelling of 378457605 in words is "three hundred seventy-eight million, four hundred fifty-seven thousand, six hundred five".