380153993 has 2 divisors, whose sum is σ = 380153994. Its totient is φ = 380153992.

The previous prime is 380153989. The next prime is 380154029. The reversal of 380153993 is 399351083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331531264 + 48622729 = 18208^2 + 6973^2 .

It is a cyclic number.

It is not a de Polignac number, because 380153993 - 2² = 380153989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 380153993.

It is not a weakly prime, because it can be changed into another prime (380153903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190076996 + 190076997.

It is an arithmetic number, because the mean of its divisors is an integer number (190076997).

Almost surely, 2^380153993 is an apocalyptic number.

It is an amenable number.

380153993 is a deficient number, since it is larger than the sum of its proper divisors (1).

380153993 is an equidigital number, since it uses as much as digits as its factorization.

380153993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 380153993 is about 19497.5381266456. The cubic root of 380153993 is about 724.4134728314.

The spelling of 380153993 in words is "three hundred eighty million, one hundred fifty-three thousand, nine hundred ninety-three".