381333793 has 2 divisors, whose sum is σ = 381333794. Its totient is φ = 381333792.

The previous prime is 381333787. The next prime is 381333809. The reversal of 381333793 is 397333183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 259628769 + 121705024 = 16113^2 + 11032^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381333793 is a prime.

It is not a weakly prime, because it can be changed into another prime (381333713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190666896 + 190666897.

It is an arithmetic number, because the mean of its divisors is an integer number (190666897).

Almost surely, 2^381333793 is an apocalyptic number.

It is an amenable number.

381333793 is a deficient number, since it is larger than the sum of its proper divisors (1).

381333793 is an equidigital number, since it uses as much as digits as its factorization.

381333793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 40.

The square root of 381333793 is about 19527.7697907365. The cubic root of 381333793 is about 725.1620996241.

The spelling of 381333793 in words is "three hundred eighty-one million, three hundred thirty-three thousand, seven hundred ninety-three".