1650166601 has 2 divisors, whose sum is σ = 1650166602. Its totient is φ = 1650166600.

The previous prime is 1650166597. The next prime is 1650166603. The reversal of 1650166601 is 1066610561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1098856201 + 551310400 = 33149^2 + 23480^2 .

It is a cyclic number.

It is not a de Polignac number, because 1650166601 - 2² = 1650166597 is a prime.

It is a super-2 number, since 2×1650166601² = 5446099622111786402, which contains 22 as substring.

Together with 1650166603, 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 (1650166603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825083300 + 825083301.

It is an arithmetic number, because the mean of its divisors is an integer number (825083301).

Almost surely, 2^1650166601 is an apocalyptic number.

It is an amenable number.

1650166601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1650166601 is an equidigital number, since it uses as much as digits as its factorization.

1650166601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1650166601 is about 40622.2426879659. The cubic root of 1650166601 is about 1181.7055201786.

The spelling of 1650166601 in words is "one billion, six hundred fifty million, one hundred sixty-six thousand, six hundred one".