381366747 has 24 divisors (see below), whose sum is σ = 569681424. Its totient is φ = 245703744.

The previous prime is 381366731. The next prime is 381366761. The reversal of 381366747 is 747663183.

It is not a de Polignac number, because 381366747 - 2⁴ = 381366731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381366787) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25993 + ... + 37925.

It is an arithmetic number, because the mean of its divisors is an integer number (23736726).

Almost surely, 2^381366747 is an apocalyptic number.

381366747 is a deficient number, since it is larger than the sum of its proper divisors (188314677).

381366747 is a wasteful number, since it uses less digits than its factorization.

381366747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12059 (or 12056 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 381366747 is about 19528.6135452571. The cubic root of 381366747 is about 725.1829879761.

The spelling of 381366747 in words is "three hundred eighty-one million, three hundred sixty-six thousand, seven hundred forty-seven".