1320018069 has 4 divisors (see below), whose sum is σ = 1760024096. Its totient is φ = 880012044.

The previous prime is 1320018067. The next prime is 1320018079. The reversal of 1320018069 is 9608100231.

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 not a de Polignac number, because 1320018069 - 2¹ = 1320018067 is a prime.

It is a super-2 number, since 2×1320018069² = 3484895404972977522, 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 (1320018067) 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, 220003009 + ... + 220003014.

It is an arithmetic number, because the mean of its divisors is an integer number (440006024).

Almost surely, 2^1320018069 is an apocalyptic number.

It is an amenable number.

1320018069 is a deficient number, since it is larger than the sum of its proper divisors (440006027).

1320018069 is an equidigital number, since it uses as much as digits as its factorization.

1320018069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440006026.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1320018069 is about 36332.0529147473. The cubic root of 1320018069 is about 1096.9663157652.

The spelling of 1320018069 in words is "one billion, three hundred twenty million, eighteen thousand, sixty-nine".