381986002 has 16 divisors (see below), whose sum is σ = 589456152. Its totient is φ = 185518080.

The previous prime is 381985993. The next prime is 381986009. The reversal of 381986002 is 200689183.

It can be written as a sum of positive squares in 4 ways, for example, as 364771801 + 17214201 = 19099^2 + 4149^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (381986009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43408 + ... + 51460.

Almost surely, 2^381986002 is an apocalyptic number.

381986002 is a deficient number, since it is larger than the sum of its proper divisors (207470150).

381986002 is a wasteful number, since it uses less digits than its factorization.

381986002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8733.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 381986002 is about 19544.4621824188. The cubic root of 381986002 is about 725.5752878194.

The spelling of 381986002 in words is "three hundred eighty-one million, nine hundred eighty-six thousand, two".