1049642855 has 4 divisors (see below), whose sum is σ = 1259571432. Its totient is φ = 839714280.

The previous prime is 1049642851. The next prime is 1049642861. The reversal of 1049642855 is 5582469401.

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

It is not a de Polignac number, because 1049642855 - 2² = 1049642851 is a prime.

It is a super-2 number, since 2×1049642855² = 2203500246105102050, 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 (1049642851) 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, 104964281 + ... + 104964290.

It is an arithmetic number, because the mean of its divisors is an integer number (314892858).

Almost surely, 2^1049642855 is an apocalyptic number.

1049642855 is a deficient number, since it is larger than the sum of its proper divisors (209928577).

1049642855 is an equidigital number, since it uses as much as digits as its factorization.

1049642855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209928576.

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 1049642855 is about 32398.1921563534. The cubic root of 1049642855 is about 1016.2811053731.

The spelling of 1049642855 in words is "one billion, forty-nine million, six hundred forty-two thousand, eight hundred fifty-five".