1049691871 has 8 divisors (see below), whose sum is σ = 1115998560. Its totient is φ = 985107552.

The previous prime is 1049691823. The next prime is 1049691883. The reversal of 1049691871 is 1781969401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1049691871 - 2¹⁹ = 1049167583 is a prime.

It is a super-2 number, since 2×1049691871² = 2203706048086961282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1049691821) 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 7 ways as a sum of consecutive naturals, for example, 429336 + ... + 431773.

It is an arithmetic number, because the mean of its divisors is an integer number (139499820).

Almost surely, 2^1049691871 is an apocalyptic number.

1049691871 is a deficient number, since it is larger than the sum of its proper divisors (66306689).

1049691871 is an equidigital number, since it uses as much as digits as its factorization.

1049691871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861185.

The product of its (nonzero) digits is 108864, while the sum is 46.

The square root of 1049691871 is about 32398.9486094842. The cubic root of 1049691871 is about 1016.2969244869.

The spelling of 1049691871 in words is "one billion, forty-nine million, six hundred ninety-one thousand, eight hundred seventy-one".