381980375 has 16 divisors (see below), whose sum is σ = 544814400. Its totient is φ = 261928800.

The previous prime is 381980323. The next prime is 381980377. The reversal of 381980375 is 573089183.

It is a happy number.

It is not a de Polignac number, because 381980375 - 2¹² = 381976279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381980377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217400 + ... + 219149.

It is an arithmetic number, because the mean of its divisors is an integer number (34050900).

Almost surely, 2^381980375 is an apocalyptic number.

381980375 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

381980375 is a deficient number, since it is larger than the sum of its proper divisors (162834025).

381980375 is an equidigital number, since it uses as much as digits as its factorization.

381980375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436571 (or 436561 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 381980375 is about 19544.3182280682. The cubic root of 381980375 is about 725.5717250080.

The spelling of 381980375 in words is "three hundred eighty-one million, nine hundred eighty thousand, three hundred seventy-five".