1031864849 has 4 divisors (see below), whose sum is σ = 1031930880. Its totient is φ = 1031798820.

The previous prime is 1031864833. The next prime is 1031864857. The reversal of 1031864849 is 9484681301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1031864849 - 2⁴ = 1031864833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031864809) 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, 5072 + ... + 45710.

It is an arithmetic number, because the mean of its divisors is an integer number (257982720).

Almost surely, 2^1031864849 is an apocalyptic number.

It is an amenable number.

1031864849 is a deficient number, since it is larger than the sum of its proper divisors (66031).

1031864849 is an equidigital number, since it uses as much as digits as its factorization.

1031864849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66030.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 1031864849 is about 32122.6532061099. The cubic root of 1031864849 is about 1010.5107533359.

The spelling of 1031864849 in words is "one billion, thirty-one million, eight hundred sixty-four thousand, eight hundred forty-nine".