381248693 has 16 divisors (see below), whose sum is σ = 443218560. Its totient is φ = 321178176.

The previous prime is 381248689. The next prime is 381248701. The reversal of 381248693 is 396842183.

It is a cyclic number.

It is not a de Polignac number, because 381248693 - 2² = 381248689 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381248653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343223 + ... + 344331.

It is an arithmetic number, because the mean of its divisors is an integer number (27701160).

Almost surely, 2^381248693 is an apocalyptic number.

It is an amenable number.

381248693 is a deficient number, since it is larger than the sum of its proper divisors (61969867).

381248693 is a wasteful number, since it uses less digits than its factorization.

381248693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916.

The product of its digits is 248832, while the sum is 44.

The square root of 381248693 is about 19525.5907208975. The cubic root of 381248693 is about 725.1081522365.

The spelling of 381248693 in words is "three hundred eighty-one million, two hundred forty-eight thousand, six hundred ninety-three".