380511889 has 2 divisors, whose sum is σ = 380511890. Its totient is φ = 380511888.

The previous prime is 380511881. The next prime is 380511899. The reversal of 380511889 is 988115083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240870400 + 139641489 = 15520^2 + 11817^2 .

It is a cyclic number.

It is not a de Polignac number, because 380511889 - 2³ = 380511881 is a prime.

It is not a weakly prime, because it can be changed into another prime (380511881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190255944 + 190255945.

It is an arithmetic number, because the mean of its divisors is an integer number (190255945).

Almost surely, 2^380511889 is an apocalyptic number.

It is an amenable number.

380511889 is a deficient number, since it is larger than the sum of its proper divisors (1).

380511889 is an equidigital number, since it uses as much as digits as its factorization.

380511889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 43.

The square root of 380511889 is about 19506.7139467415. The cubic root of 380511889 is about 724.6407345639.

The spelling of 380511889 in words is "three hundred eighty million, five hundred eleven thousand, eight hundred eighty-nine".