2142996649 has 4 divisors (see below), whose sum is σ = 2144027536. Its totient is φ = 2141965764.

The previous prime is 2142996619. The next prime is 2142996677. The reversal of 2142996649 is 9466992412.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2142996649 - 2⁹ = 2142996137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2142996596 and 2142996605.

It is not an unprimeable number, because it can be changed into a prime (2142996619) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 512319 + ... + 516484.

It is an arithmetic number, because the mean of its divisors is an integer number (536006884).

Almost surely, 2^2142996649 is an apocalyptic number.

It is an amenable number.

2142996649 is a deficient number, since it is larger than the sum of its proper divisors (1030887).

2142996649 is a wasteful number, since it uses less digits than its factorization.

2142996649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030886.

The product of its digits is 1679616, while the sum is 52.

The square root of 2142996649 is about 46292.5118026663. The cubic root of 2142996649 is about 1289.2599663483.

The spelling of 2142996649 in words is "two billion, one hundred forty-two million, nine hundred ninety-six thousand, six hundred forty-nine".