1043640650 has 48 divisors (see below), whose sum is σ = 2141534808. Its totient is φ = 375936000.

The previous prime is 1043640613. The next prime is 1043640671. The reversal of 1043640650 is 560463401.

It is a happy number.

1043640650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 63888049 + 979752601 = 7993^2 + 31301^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7070 + ... + 46230.

Almost surely, 2^1043640650 is an apocalyptic number.

1043640650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1043640650 is an abundant number, since it is smaller than the sum of its proper divisors (1097894158).

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

1043640650 is a wasteful number, since it uses less digits than its factorization.

1043640650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39227 (or 39222 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1043640650 is about 32305.4275625629. The cubic root of 1043640650 is about 1014.3402573611.

The spelling of 1043640650 in words is "one billion, forty-three million, six hundred forty thousand, six hundred fifty".