381939002 has 4 divisors (see below), whose sum is σ = 572908506. Its totient is φ = 190969500.

The previous prime is 381938971. The next prime is 381939043. The reversal of 381939002 is 200939183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200939183 = 271 ⋅741473.

It can be written as a sum of positive squares in only one way, i.e., 298563841 + 83375161 = 17279^2 + 9131^2 .

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 as a sum of consecutive naturals, namely, 95484749 + ... + 95484752.

Almost surely, 2^381939002 is an apocalyptic number.

381939002 is a deficient number, since it is larger than the sum of its proper divisors (190969504).

381939002 is a wasteful number, since it uses less digits than its factorization.

381939002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190969503.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 381939002 is about 19543.2597588018. The cubic root of 381939002 is about 725.5455280576.

The spelling of 381939002 in words is "three hundred eighty-one million, nine hundred thirty-nine thousand, two".