1045867831 has 4 divisors (see below), whose sum is σ = 1053392200. Its totient is φ = 1038343464.

The previous prime is 1045867817. The next prime is 1045867847. The reversal of 1045867831 is 1387685401.

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 1045867831 - 2¹¹ = 1045865783 is a prime.

It is a super-2 number, since 2×1045867831² = 2187679039841289122, 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 (1045867231) 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 3 ways as a sum of consecutive naturals, for example, 3761976 + ... + 3762253.

It is an arithmetic number, because the mean of its divisors is an integer number (263348050).

Almost surely, 2^1045867831 is an apocalyptic number.

1045867831 is a deficient number, since it is larger than the sum of its proper divisors (7524369).

1045867831 is an equidigital number, since it uses as much as digits as its factorization.

1045867831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7524368.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 1045867831 is about 32339.8798853675. The cubic root of 1045867831 is about 1015.0612955291.

The spelling of 1045867831 in words is "one billion, forty-five million, eight hundred sixty-seven thousand, eight hundred thirty-one".