1650100661 has 16 divisors (see below), whose sum is σ = 1885593600. Its totient is φ = 1429356720.

The previous prime is 1650100651. The next prime is 1650100703. The reversal of 1650100661 is 1660010561.

It is not a de Polignac number, because 1650100661 - 2²⁶ = 1582991797 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1650100661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650100601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54140 + ... + 78938.

It is an arithmetic number, because the mean of its divisors is an integer number (117849600).

Almost surely, 2^1650100661 is an apocalyptic number.

1650100661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1650100661 is a deficient number, since it is larger than the sum of its proper divisors (235492939).

1650100661 is a wasteful number, since it uses less digits than its factorization.

1650100661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25096.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1650100661 is about 40621.4310555401. The cubic root of 1650100661 is about 1181.6897798084.

The spelling of 1650100661 in words is "one billion, six hundred fifty million, one hundred thousand, six hundred sixty-one".