381684532 has 6 divisors (see below), whose sum is σ = 667947938. Its totient is φ = 190842264.

The previous prime is 381684491. The next prime is 381684551. The reversal of 381684532 is 235486183.

It can be written as a sum of positive squares in only one way, i.e., 329930896 + 51753636 = 18164^2 + 7194^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47710563 + ... + 47710570.

Almost surely, 2^381684532 is an apocalyptic number.

It is an amenable number.

381684532 is a deficient number, since it is larger than the sum of its proper divisors (286263406).

381684532 is a wasteful number, since it uses less digits than its factorization.

381684532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95421137 (or 95421135 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 381684532 is about 19536.7482452940. The cubic root of 381684532 is about 725.3843587012.

The spelling of 381684532 in words is "three hundred eighty-one million, six hundred eighty-four thousand, five hundred thirty-two".