1049545581 has 8 divisors (see below), whose sum is σ = 1599307584. Its totient is φ = 599740320.

The previous prime is 1049545577. The next prime is 1049545603. The reversal of 1049545581 is 1855459401.

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

It is not a de Polignac number, because 1049545581 - 2² = 1049545577 is a prime.

It is a super-2 number, since 2×1049545581² = 2203091853193255122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1049545381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24989160 + ... + 24989201.

It is an arithmetic number, because the mean of its divisors is an integer number (199913448).

Almost surely, 2^1049545581 is an apocalyptic number.

It is an amenable number.

1049545581 is a deficient number, since it is larger than the sum of its proper divisors (549762003).

1049545581 is an equidigital number, since it uses as much as digits as its factorization.

1049545581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49978371.

The product of its (nonzero) digits is 144000, while the sum is 42.

The square root of 1049545581 is about 32396.6908958307. The cubic root of 1049545581 is about 1016.2497103192.

The spelling of 1049545581 in words is "one billion, forty-nine million, five hundred forty-five thousand, five hundred eighty-one".