1047643953 has 4 divisors (see below), whose sum is σ = 1396858608. Its totient is φ = 698429300.

The previous prime is 1047643901. The next prime is 1047643967. The reversal of 1047643953 is 3593467401.

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 1047643953 - 2¹⁶ = 1047578417 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1047644953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174607323 + ... + 174607328.

It is an arithmetic number, because the mean of its divisors is an integer number (349214652).

Almost surely, 2^1047643953 is an apocalyptic number.

It is an amenable number.

1047643953 is a deficient number, since it is larger than the sum of its proper divisors (349214655).

1047643953 is an equidigital number, since it uses as much as digits as its factorization.

1047643953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349214654.

The product of its (nonzero) digits is 272160, while the sum is 42.

The square root of 1047643953 is about 32367.3284810471. The cubic root of 1047643953 is about 1015.6355723939.

The spelling of 1047643953 in words is "one billion, forty-seven million, six hundred forty-three thousand, nine hundred fifty-three".