381880997 has 8 divisors (see below), whose sum is σ = 383999616. Its totient is φ = 379767952.

The previous prime is 381880957. The next prime is 381881041. The reversal of 381880997 is 799088183.

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 381880997 - 2¹⁰ = 381879973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381880907) 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, 232463 + ... + 234099.

It is an arithmetic number, because the mean of its divisors is an integer number (47999952).

Almost surely, 2^381880997 is an apocalyptic number.

It is an amenable number.

381880997 is a deficient number, since it is larger than the sum of its proper divisors (2118619).

381880997 is a wasteful number, since it uses less digits than its factorization.

381880997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787.

The product of its (nonzero) digits is 870912, while the sum is 53.

The square root of 381880997 is about 19541.7756869738. The cubic root of 381880997 is about 725.5087967132.

The spelling of 381880997 in words is "three hundred eighty-one million, eight hundred eighty thousand, nine hundred ninety-seven".