381281996 has 6 divisors (see below), whose sum is σ = 667243500. Its totient is φ = 190640996.

The previous prime is 381281983. The next prime is 381282029. The reversal of 381281996 is 699182183.

381281996 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

381281996 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 381281996.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 47660246 + ... + 47660253.

It is an arithmetic number, because the mean of its divisors is an integer number (111207250).

Almost surely, 2^381281996 is an apocalyptic number.

It is an amenable number.

381281996 is a deficient number, since it is larger than the sum of its proper divisors (285961504).

381281996 is a wasteful number, since it uses less digits than its factorization.

381281996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95320503 (or 95320501 counting only the distinct ones).

The product of its digits is 186624, while the sum is 47.

The square root of 381281996 is about 19526.4435061790. The cubic root of 381281996 is about 725.1292649416.

The spelling of 381281996 in words is "three hundred eighty-one million, two hundred eighty-one thousand, nine hundred ninety-six".