2047951729 has 4 divisors (see below), whose sum is σ = 2114014720. Its totient is φ = 1981888740.

The previous prime is 2047951721. The next prime is 2047951769. The reversal of 2047951729 is 9271597402.

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 2047951729 - 2³ = 2047951721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2047951721) 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, 33031449 + ... + 33031510.

It is an arithmetic number, because the mean of its divisors is an integer number (528503680).

Almost surely, 2^2047951729 is an apocalyptic number.

It is an amenable number.

2047951729 is a deficient number, since it is larger than the sum of its proper divisors (66062991).

2047951729 is an equidigital number, since it uses as much as digits as its factorization.

2047951729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66062990.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 2047951729 is about 45254.3006685552. The cubic root of 2047951729 is about 1269.9108642258.

The spelling of 2047951729 in words is "two billion, forty-seven million, nine hundred fifty-one thousand, seven hundred twenty-nine".