380821933 has 2 divisors, whose sum is σ = 380821934. Its totient is φ = 380821932.

The previous prime is 380821901. The next prime is 380821943. The reversal of 380821933 is 339128083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 298702089 + 82119844 = 17283^2 + 9062^2 .

It is a cyclic number.

It is not a de Polignac number, because 380821933 - 2⁵ = 380821901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 380821892 and 380821901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380821943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190410966 + 190410967.

It is an arithmetic number, because the mean of its divisors is an integer number (190410967).

Almost surely, 2^380821933 is an apocalyptic number.

It is an amenable number.

380821933 is a deficient number, since it is larger than the sum of its proper divisors (1).

380821933 is an equidigital number, since it uses as much as digits as its factorization.

380821933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 380821933 is about 19514.6594384837. The cubic root of 380821933 is about 724.8374954054.

The spelling of 380821933 in words is "three hundred eighty million, eight hundred twenty-one thousand, nine hundred thirty-three".