381744747 has 12 divisors (see below), whose sum is σ = 554457904. Its totient is φ = 253089360.

The previous prime is 381744733. The next prime is 381744749. The reversal of 381744747 is 747447183.

381744747 is a `hidden beast` number, since 3 + 8 + 174 + 474 + 7 = 666.

It is not a de Polignac number, because 381744747 - 2⁶ = 381744683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381744749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115543 + ... + 118800.

Almost surely, 2^381744747 is an apocalyptic number.

381744747 is a deficient number, since it is larger than the sum of its proper divisors (172713157).

381744747 is a wasteful number, since it uses less digits than its factorization.

381744747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234530 (or 234527 counting only the distinct ones).

The product of its digits is 526848, while the sum is 45.

The square root of 381744747 is about 19538.2892546917. The cubic root of 381744747 is about 725.4225025248.

The spelling of 381744747 in words is "three hundred eighty-one million, seven hundred forty-four thousand, seven hundred forty-seven".