381316869 has 8 divisors (see below), whose sum is σ = 564913920. Its totient is φ = 254211228.

The previous prime is 381316867. The next prime is 381316877. The reversal of 381316869 is 968613183.

It is a happy number.

It is not a de Polignac number, because 381316869 - 2¹ = 381316867 is a prime.

It is a super-3 number, since 3×381316869³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381316867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7061397 + ... + 7061450.

It is an arithmetic number, because the mean of its divisors is an integer number (70614240).

Almost surely, 2^381316869 is an apocalyptic number.

It is an amenable number.

381316869 is a deficient number, since it is larger than the sum of its proper divisors (183597051).

381316869 is a wasteful number, since it uses less digits than its factorization.

381316869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14122856 (or 14122850 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 381316869 is about 19527.3364543145. The cubic root of 381316869 is about 725.1513716432.

The spelling of 381316869 in words is "three hundred eighty-one million, three hundred sixteen thousand, eight hundred sixty-nine".