1650936901 has 2 divisors, whose sum is σ = 1650936902. Its totient is φ = 1650936900.

The previous prime is 1650936887. The next prime is 1650936971. The reversal of 1650936901 is 1096390561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1626186276 + 24750625 = 40326^2 + 4975^2 .

It is a cyclic number.

It is not a de Polignac number, because 1650936901 - 2⁷ = 1650936773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1650936971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825468450 + 825468451.

It is an arithmetic number, because the mean of its divisors is an integer number (825468451).

Almost surely, 2^1650936901 is an apocalyptic number.

It is an amenable number.

1650936901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1650936901 is an equidigital number, since it uses as much as digits as its factorization.

1650936901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 1650936901 is about 40631.7228406574. The cubic root of 1650936901 is about 1181.8893654866.

The spelling of 1650936901 in words is "one billion, six hundred fifty million, nine hundred thirty-six thousand, nine hundred one".