381033386550 has 48 divisors (see below), whose sum is σ = 1049958668880. Its totient is φ = 101608902720.

The previous prime is 381033386549. The next prime is 381033386567. The reversal of 381033386550 is 55683330183.

381033386550 is a `hidden beast` number, since 3 + 8 + 10 + 3 + 3 + 3 + 86 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 381033386496 and 381033386505.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 141122127 + ... + 141124826.

It is an arithmetic number, because the mean of its divisors is an integer number (21874138935).

Almost surely, 2^381033386550 is an apocalyptic number.

381033386550 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

381033386550 is an abundant number, since it is smaller than the sum of its proper divisors (668925282330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381033386550 is a wasteful number, since it uses less digits than its factorization.

381033386550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282246974 (or 282246963 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 381033386550 in words is "three hundred eighty-one billion, thirty-three million, three hundred eighty-six thousand, five hundred fifty".