1650937218 has 64 divisors (see below), whose sum is σ = 4055298048. Its totient is φ = 437310720.

The previous prime is 1650937199. The next prime is 1650937219. The reversal of 1650937218 is 8127390561.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 1650937218.

It is not an unprimeable number, because it can be changed into a prime (1650937219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30583 + ... + 65093.

It is an arithmetic number, because the mean of its divisors is an integer number (63364032).

Almost surely, 2^1650937218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1650937218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2027649024).

1650937218 is an abundant number, since it is smaller than the sum of its proper divisors (2404360830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1650937218 is a wasteful number, since it uses less digits than its factorization.

1650937218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34607.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 1650937218 is about 40631.7267415501. The cubic root of 1650937218 is about 1181.8894411323.

The spelling of 1650937218 in words is "one billion, six hundred fifty million, nine hundred thirty-seven thousand, two hundred eighteen".