1676463989 has 2 divisors, whose sum is σ = 1676463990. Its totient is φ = 1676463988.

The previous prime is 1676463979. The next prime is 1676464021. The reversal of 1676463989 is 9893646761.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 850188964 + 826275025 = 29158^2 + 28745^2 .

It is an emirp because it is prime and its reverse (9893646761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1676463989 - 2¹² = 1676459893 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1676463979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 838231994 + 838231995.

It is an arithmetic number, because the mean of its divisors is an integer number (838231995).

Almost surely, 2^1676463989 is an apocalyptic number.

It is an amenable number.

1676463989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1676463989 is an equidigital number, since it uses as much as digits as its factorization.

1676463989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 59.

The square root of 1676463989 is about 40944.6454252568. The cubic root of 1676463989 is about 1187.9497660874.

The spelling of 1676463989 in words is "one billion, six hundred seventy-six million, four hundred sixty-three thousand, nine hundred eighty-nine".