381401748 has 72 divisors (see below), whose sum is σ = 1186593408. Its totient is φ = 100588608.

The previous prime is 381401747. The next prime is 381401753. The reversal of 381401748 is 847104183.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381401743) 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 23 ways as a sum of consecutive naturals, for example, 54936 + ... + 61487.

It is an arithmetic number, because the mean of its divisors is an integer number (16480464).

Almost surely, 2^381401748 is an apocalyptic number.

It is an amenable number.

381401748 is an abundant number, since it is smaller than the sum of its proper divisors (805191660).

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

381401748 is a wasteful number, since it uses less digits than its factorization.

381401748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116453 (or 116448 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 381401748 is about 19529.5096712642. The cubic root of 381401748 is about 725.2051725299.

The spelling of 381401748 in words is "three hundred eighty-one million, four hundred one thousand, seven hundred forty-eight".