1049191831 has 4 divisors (see below), whose sum is σ = 1057453312. Its totient is φ = 1040930352.

The previous prime is 1049191823. The next prime is 1049191849. The reversal of 1049191831 is 1381919401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1049191831 - 2³ = 1049191823 is a prime.

It is a super-2 number, since 2×1049191831² = 2201606996474265122, 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 (1049191861) 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, 4130550 + ... + 4130803.

It is an arithmetic number, because the mean of its divisors is an integer number (264363328).

Almost surely, 2^1049191831 is an apocalyptic number.

1049191831 is a deficient number, since it is larger than the sum of its proper divisors (8261481).

1049191831 is an equidigital number, since it uses as much as digits as its factorization.

1049191831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8261480.

The product of its (nonzero) digits is 7776, while the sum is 37.

The square root of 1049191831 is about 32391.2307731583. The cubic root of 1049191831 is about 1016.1355216205.

The spelling of 1049191831 in words is "one billion, forty-nine million, one hundred ninety-one thousand, eight hundred thirty-one".