2128995746 has 4 divisors (see below), whose sum is σ = 3193493622. Its totient is φ = 1064497872.

The previous prime is 2128995689. The next prime is 2128995787. The reversal of 2128995746 is 6475998212.

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., 1138320121 + 990675625 = 33739^2 + 31475^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532248935 + ... + 532248938.

Almost surely, 2^2128995746 is an apocalyptic number.

2128995746 is a deficient number, since it is larger than the sum of its proper divisors (1064497876).

2128995746 is a wasteful number, since it uses less digits than its factorization.

2128995746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064497875.

The product of its digits is 2177280, while the sum is 53.

The square root of 2128995746 is about 46141.0418824716. The cubic root of 2128995746 is about 1286.4461094590.

The spelling of 2128995746 in words is "two billion, one hundred twenty-eight million, nine hundred ninety-five thousand, seven hundred forty-six".