381940970 has 8 divisors (see below), whose sum is σ = 687493764. Its totient is φ = 152776384.

The previous prime is 381940957. The next prime is 381940997. The reversal of 381940970 is 79049183.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 377408329 + 4532641 = 19427^2 + 2129^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19097039 + ... + 19097058.

Almost surely, 2^381940970 is an apocalyptic number.

381940970 is a deficient number, since it is larger than the sum of its proper divisors (305552794).

381940970 is a wasteful number, since it uses less digits than its factorization.

381940970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38194104.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 381940970 is about 19543.3101085768. The cubic root of 381940970 is about 725.5467742174.

The spelling of 381940970 in words is "three hundred eighty-one million, nine hundred forty thousand, nine hundred seventy".