381377486 has 24 divisors (see below), whose sum is σ = 671373360. Its totient is φ = 161996352.

The previous prime is 381377461. The next prime is 381377489. The reversal of 381377486 is 684773183.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 381377486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381377489) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 6146 + ... + 28293.

It is an arithmetic number, because the mean of its divisors is an integer number (27973890).

Almost surely, 2^381377486 is an apocalyptic number.

381377486 is a deficient number, since it is larger than the sum of its proper divisors (289995874).

381377486 is a wasteful number, since it uses less digits than its factorization.

381377486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34568 (or 34561 counting only the distinct ones).

The product of its digits is 677376, while the sum is 47.

The square root of 381377486 is about 19528.8884988368. Note that the first 3 decimals coincide. The cubic root of 381377486 is about 725.1897947809.

The spelling of 381377486 in words is "three hundred eighty-one million, three hundred seventy-seven thousand, four hundred eighty-six".