381743285 has 16 divisors (see below), whose sum is σ = 571128192. Its totient is φ = 237969600.

The previous prime is 381743281. The next prime is 381743291. The reversal of 381743285 is 582347183.

It is not a de Polignac number, because 381743285 - 2² = 381743281 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 (381743281) 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, 495386 + ... + 496155.

It is an arithmetic number, because the mean of its divisors is an integer number (35695512).

Almost surely, 2^381743285 is an apocalyptic number.

381743285 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

381743285 is a deficient number, since it is larger than the sum of its proper divisors (189384907).

381743285 is a wasteful number, since it uses less digits than its factorization.

381743285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991564.

The product of its digits is 161280, while the sum is 41.

The square root of 381743285 is about 19538.2518409401. The cubic root of 381743285 is about 725.4215764531.

The spelling of 381743285 in words is "three hundred eighty-one million, seven hundred forty-three thousand, two hundred eighty-five".