1650486217 has 4 divisors (see below), whose sum is σ = 1660369536. Its totient is φ = 1640602900.

The previous prime is 1650486209. The next prime is 1650486223. The reversal of 1650486217 is 7126840561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1650486217 - 2³ = 1650486209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1650486217.

It is not an unprimeable number, because it can be changed into a prime (1650480217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4941409 + ... + 4941742.

It is an arithmetic number, because the mean of its divisors is an integer number (415092384).

Almost surely, 2^1650486217 is an apocalyptic number.

It is an amenable number.

1650486217 is a deficient number, since it is larger than the sum of its proper divisors (9883319).

1650486217 is an equidigital number, since it uses as much as digits as its factorization.

1650486217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9883318.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 1650486217 is about 40626.1764998874. The cubic root of 1650486217 is about 1181.7818089625.

The spelling of 1650486217 in words is "one billion, six hundred fifty million, four hundred eighty-six thousand, two hundred seventeen".