381630289521 has 8 divisors (see below), whose sum is σ = 547981954240. Its totient is φ = 234849408912.

The previous prime is 381630289517. The next prime is 381630289541. The reversal of 381630289521 is 125982036183.

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

It is not a de Polignac number, because 381630289521 - 2² = 381630289517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381630289541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4892695981 + ... + 4892696058.

It is an arithmetic number, because the mean of its divisors is an integer number (68497744280).

Almost surely, 2^381630289521 is an apocalyptic number.

It is an amenable number.

381630289521 is a deficient number, since it is larger than the sum of its proper divisors (166351664719).

381630289521 is a wasteful number, since it uses less digits than its factorization.

381630289521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9785392055.

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 381630289521 in words is "three hundred eighty-one billion, six hundred thirty million, two hundred eighty-nine thousand, five hundred twenty-one".