381541401 has 16 divisors (see below), whose sum is σ = 569702400. Its totient is φ = 252355824.

The previous prime is 381541399. The next prime is 381541403. The reversal of 381541401 is 104145183.

It is a happy number.

381541401 is a `hidden beast` number, since 3 + 81 + 541 + 40 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (381541399) and next prime (381541403).

It is not a de Polignac number, because 381541401 - 2¹ = 381541399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (381541403) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 52206 + ... + 59063.

It is an arithmetic number, because the mean of its divisors is an integer number (35606400).

Almost surely, 2^381541401 is an apocalyptic number.

It is an amenable number.

381541401 is a deficient number, since it is larger than the sum of its proper divisors (188160999).

381541401 is a wasteful number, since it uses less digits than its factorization.

381541401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111405 (or 111399 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 381541401 is about 19533.0847794198. The cubic root of 381541401 is about 725.2936747631.

Adding to 381541401 its reverse (104145183), we get a palindrome (485686584).

The spelling of 381541401 in words is "three hundred eighty-one million, five hundred forty-one thousand, four hundred one".