2169799946 has 4 divisors (see below), whose sum is σ = 3254699922. Its totient is φ = 1084899972.

The previous prime is 2169799939. The next prime is 2169799963. The reversal of 2169799946 is 6499979612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1401678721 + 768121225 = 37439^2 + 27715^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542449985 + ... + 542449988.

Almost surely, 2^2169799946 is an apocalyptic number.

2169799946 is a deficient number, since it is larger than the sum of its proper divisors (1084899976).

2169799946 is a wasteful number, since it uses less digits than its factorization.

2169799946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084899975.

The product of its digits is 13226976, while the sum is 62.

The square root of 2169799946 is about 46581.1114723554. Note that the first 3 decimals coincide. The cubic root of 2169799946 is about 1294.6128041455.

The spelling of 2169799946 in words is "two billion, one hundred sixty-nine million, seven hundred ninety-nine thousand, nine hundred forty-six".