1650385120 has 48 divisors (see below), whose sum is σ = 3935515248. Its totient is φ = 653977600.

The previous prime is 1650385067. The next prime is 1650385123. The reversal of 1650385120 is 215830561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650385123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31081 + ... + 65320.

It is an arithmetic number, because the mean of its divisors is an integer number (81989901).

Almost surely, 2^1650385120 is an apocalyptic number.

1650385120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1650385120 is an abundant number, since it is smaller than the sum of its proper divisors (2285130128).

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

1650385120 is a wasteful number, since it uses less digits than its factorization.

1650385120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96523 (or 96515 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1650385120 is about 40624.9322460973. The cubic root of 1650385120 is about 1181.7576792982.

The spelling of 1650385120 in words is "one billion, six hundred fifty million, three hundred eighty-five thousand, one hundred twenty".