2143646770 has 16 divisors (see below), whose sum is σ = 3862816128. Its totient is φ = 856513840.

The previous prime is 2143646767. The next prime is 2143646779. The reversal of 2143646770 is 776463412.

It is not an unprimeable number, because it can be changed into a prime (2143646779) 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, 108544 + ... + 126763.

It is an arithmetic number, because the mean of its divisors is an integer number (241426008).

Almost surely, 2^2143646770 is an apocalyptic number.

2143646770 is a deficient number, since it is larger than the sum of its proper divisors (1719169358).

2143646770 is a wasteful number, since it uses less digits than its factorization.

2143646770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236225.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 2143646770 is about 46299.5331509941. The cubic root of 2143646770 is about 1289.3903274533.

The spelling of 2143646770 in words is "two billion, one hundred forty-three million, six hundred forty-six thousand, seven hundred seventy".