381115533 has 8 divisors (see below), whose sum is σ = 513864000. Its totient is φ = 251222048.

The previous prime is 381115529. The next prime is 381115561. The reversal of 381115533 is 335511183.

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

It is a cyclic number.

It is not a de Polignac number, because 381115533 - 2² = 381115529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 381115533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381114533) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 713433 + ... + 713966.

It is an arithmetic number, because the mean of its divisors is an integer number (64233000).

Almost surely, 2^381115533 is an apocalyptic number.

It is an amenable number.

381115533 is a deficient number, since it is larger than the sum of its proper divisors (132748467).

381115533 is a wasteful number, since it uses less digits than its factorization.

381115533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427491.

The product of its digits is 5400, while the sum is 30.

The square root of 381115533 is about 19522.1805390689. The cubic root of 381115533 is about 725.0237220934.

The spelling of 381115533 in words is "three hundred eighty-one million, one hundred fifteen thousand, five hundred thirty-three".