381970 has 8 divisors (see below), whose sum is σ = 687564. Its totient is φ = 152784.

The previous prime is 381949. The next prime is 381977. The reversal of 381970 is 79183.

381970 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 373321 + 8649 = 611^2 + 93^2 .

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

It is not an unprimeable number, because it can be changed into a prime (381977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19089 + ... + 19108.

2³⁸¹⁹⁷⁰ is an apocalyptic number.

381970 is a deficient number, since it is larger than the sum of its proper divisors (305594).

381970 is a wasteful number, since it uses less digits than its factorization.

381970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38204.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 381970 is about 618.0372157079. The cubic root of 381970 is about 72.5565155844.

The spelling of 381970 in words is "three hundred eighty-one thousand, nine hundred seventy".