2190644650 has 48 divisors (see below), whose sum is σ = 4375166400. Its totient is φ = 813075200.

The previous prime is 2190644611. The next prime is 2190644657. The reversal of 2190644650 is 564460912.

It is not an unprimeable number, because it can be changed into a prime (2190644657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42201 + ... + 78499.

It is an arithmetic number, because the mean of its divisors is an integer number (91149300).

Almost surely, 2^2190644650 is an apocalyptic number.

2190644650 is a deficient number, since it is larger than the sum of its proper divisors (2184521750).

2190644650 is a wasteful number, since it uses less digits than its factorization.

2190644650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36399 (or 36394 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 2190644650 is about 46804.3229841005. The cubic root of 2190644650 is about 1298.7452686405.

The spelling of 2190644650 in words is "two billion, one hundred ninety million, six hundred forty-four thousand, six hundred fifty".