1020361109 has 4 divisors (see below), whose sum is σ = 1020554016. Its totient is φ = 1020168204.

The previous prime is 1020361087. The next prime is 1020361129. The reversal of 1020361109 is 9011630201.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 1020361109 - 2²⁰ = 1019312533 is a prime.

It is a super-2 number, since 2×1020361109² = 2082273585519419762, 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 (1020361129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88289 + ... + 99174.

It is an arithmetic number, because the mean of its divisors is an integer number (255138504).

Almost surely, 2^1020361109 is an apocalyptic number.

It is an amenable number.

1020361109 is a deficient number, since it is larger than the sum of its proper divisors (192907).

1020361109 is an equidigital number, since it uses as much as digits as its factorization.

1020361109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192906.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1020361109 is about 31943.0917257550. The cubic root of 1020361109 is about 1006.7414865640.

The spelling of 1020361109 in words is "one billion, twenty million, three hundred sixty-one thousand, one hundred nine".