1989325379 has 2 divisors, whose sum is σ = 1989325380. Its totient is φ = 1989325378.

The previous prime is 1989325369. The next prime is 1989325381. The reversal of 1989325379 is 9735239891.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1989325379 - 2²⁴ = 1972548163 is a prime.

Together with 1989325381, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1989325369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994662689 + 994662690.

It is an arithmetic number, because the mean of its divisors is an integer number (994662690).

Almost surely, 2^1989325379 is an apocalyptic number.

1989325379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1989325379 is an equidigital number, since it uses as much as digits as its factorization.

1989325379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 56.

The square root of 1989325379 is about 44601.8539861293. The cubic root of 1989325379 is about 1257.6755201644.

The spelling of 1989325379 in words is "one billion, nine hundred eighty-nine million, three hundred twenty-five thousand, three hundred seventy-nine".