1630923839 has 2 divisors, whose sum is σ = 1630923840. Its totient is φ = 1630923838.

The previous prime is 1630923817. The next prime is 1630923841. The reversal of 1630923839 is 9383290361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1630923839 - 2¹⁶ = 1630858303 is a prime.

It is a Sophie Germain prime.

Together with 1630923841, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1630923839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630923439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815461919 + 815461920.

It is an arithmetic number, because the mean of its divisors is an integer number (815461920).

Almost surely, 2^1630923839 is an apocalyptic number.

1630923839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630923839 is an equidigital number, since it uses as much as digits as its factorization.

1630923839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 1630923839 is about 40384.6980798421. The cubic root of 1630923839 is about 1177.0942194125.

The spelling of 1630923839 in words is "one billion, six hundred thirty million, nine hundred twenty-three thousand, eight hundred thirty-nine".