1049656191 has 4 divisors (see below), whose sum is σ = 1399541592. Its totient is φ = 699770792.

The previous prime is 1049656183. The next prime is 1049656193. The reversal of 1049656191 is 1916569401.

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 1049656191 - 2³ = 1049656183 is a prime.

It is a super-2 number, since 2×1049656191² = 2203556238609256962, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1049656193) 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, 174942696 + ... + 174942701.

It is an arithmetic number, because the mean of its divisors is an integer number (349885398).

Almost surely, 2^1049656191 is an apocalyptic number.

1049656191 is a deficient number, since it is larger than the sum of its proper divisors (349885401).

1049656191 is an equidigital number, since it uses as much as digits as its factorization.

1049656191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349885400.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 1049656191 is about 32398.3979696528. The cubic root of 1049656191 is about 1016.2854093982.

It can be divided in two parts, 104965 and 6191, that added together give a triangular number (111156 = T₄₇₁).

The spelling of 1049656191 in words is "one billion, forty-nine million, six hundred fifty-six thousand, one hundred ninety-one".