2049158789 has 4 divisors (see below), whose sum is σ = 2050572480. Its totient is φ = 2047745100.

The previous prime is 2049158777. The next prime is 2049158791. The reversal of 2049158789 is 9878519402.

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 2049158789 - 2²⁰ = 2048110213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2049158789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2049151789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704669 + ... + 707570.

It is an arithmetic number, because the mean of its divisors is an integer number (512643120).

Almost surely, 2^2049158789 is an apocalyptic number.

It is an amenable number.

2049158789 is a deficient number, since it is larger than the sum of its proper divisors (1413691).

2049158789 is a wasteful number, since it uses less digits than its factorization.

2049158789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413690.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The square root of 2049158789 is about 45267.6351160517. The cubic root of 2049158789 is about 1270.1603098109.

The spelling of 2049158789 in words is "two billion, forty-nine million, one hundred fifty-eight thousand, seven hundred eighty-nine".