378493970 has 8 divisors (see below), whose sum is σ = 681289164. Its totient is φ = 151397584.

The previous prime is 378493963. The next prime is 378494009. The reversal of 378493970 is 79394873.

It can be written as a sum of positive squares in 2 ways, for example, as 345327889 + 33166081 = 18583^2 + 5759^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18924689 + ... + 18924708.

Almost surely, 2^378493970 is an apocalyptic number.

378493970 is a deficient number, since it is larger than the sum of its proper divisors (302795194).

378493970 is a wasteful number, since it uses less digits than its factorization.

378493970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37849404.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The square root of 378493970 is about 19454.9214853209. The cubic root of 378493970 is about 723.3574992929.

The spelling of 378493970 in words is "three hundred seventy-eight million, four hundred ninety-three thousand, nine hundred seventy".