378275906 has 16 divisors (see below), whose sum is σ = 577256760. Its totient is φ = 185884800.

The previous prime is 378275897. The next prime is 378275929. The reversal of 378275906 is 609572873.

It can be written as a sum of positive squares in 4 ways, for example, as 376010881 + 2265025 = 19391^2 + 1505^2 .

It is a super-2 number, since 2×378275906² = 286185322120241672, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20840 + ... + 34508.

Almost surely, 2^378275906 is an apocalyptic number.

378275906 is a deficient number, since it is larger than the sum of its proper divisors (198980854).

378275906 is a wasteful number, since it uses less digits than its factorization.

378275906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13909.

The product of its (nonzero) digits is 635040, while the sum is 47.

The square root of 378275906 is about 19449.3163375991. The cubic root of 378275906 is about 723.2185551751.

The spelling of 378275906 in words is "three hundred seventy-eight million, two hundred seventy-five thousand, nine hundred six".