1650930857 has 2 divisors, whose sum is σ = 1650930858. Its totient is φ = 1650930856.

The previous prime is 1650930851. The next prime is 1650930859. The reversal of 1650930857 is 7580390561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1444836121 + 206094736 = 38011^2 + 14356^2 .

It is a cyclic number.

It is not a de Polignac number, because 1650930857 - 2⁶ = 1650930793 is a prime.

Together with 1650930859, 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 (1650930851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825465428 + 825465429.

It is an arithmetic number, because the mean of its divisors is an integer number (825465429).

Almost surely, 2^1650930857 is an apocalyptic number.

It is an amenable number.

1650930857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1650930857 is an equidigital number, since it uses as much as digits as its factorization.

1650930857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 1650930857 is about 40631.6484652051. The cubic root of 1650930857 is about 1181.8879232049.

The spelling of 1650930857 in words is "one billion, six hundred fifty million, nine hundred thirty thousand, eight hundred fifty-seven".