380581989 has 32 divisors (see below), whose sum is σ = 566630400. Its totient is φ = 226100160.

The previous prime is 380581937. The next prime is 380581997. The reversal of 380581989 is 989185083.

It is not a de Polignac number, because 380581989 - 2¹³ = 380573797 is a prime.

It is a super-2 number, since 2×380581989² = 289685300702392242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380582989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77592 + ... + 82350.

It is an arithmetic number, because the mean of its divisors is an integer number (17707200).

Almost surely, 2^380581989 is an apocalyptic number.

It is an amenable number.

380581989 is a deficient number, since it is larger than the sum of its proper divisors (186048411).

380581989 is a wasteful number, since it uses less digits than its factorization.

380581989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4865.

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 380581989 is about 19508.5106812386. The cubic root of 380581989 is about 724.6852309366.

The spelling of 380581989 in words is "three hundred eighty million, five hundred eighty-one thousand, nine hundred eighty-nine".