381962686 has 16 divisors (see below), whose sum is σ = 655056864. Its totient is φ = 163632384.

The previous prime is 381962677. The next prime is 381962689. The reversal of 381962686 is 686269183.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381962689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49506 + ... + 56698.

It is an arithmetic number, because the mean of its divisors is an integer number (40941054).

Almost surely, 2^381962686 is an apocalyptic number.

381962686 is a deficient number, since it is larger than the sum of its proper divisors (273094178).

381962686 is a wasteful number, since it uses less digits than its factorization.

381962686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10995.

The product of its digits is 746496, while the sum is 49.

The square root of 381962686 is about 19543.8656872176. The cubic root of 381962686 is about 725.5605247499.

The spelling of 381962686 in words is "three hundred eighty-one million, nine hundred sixty-two thousand, six hundred eighty-six".