1320018071 has 4 divisors (see below), whose sum is σ = 1320159600. Its totient is φ = 1319876544.

The previous prime is 1320018067. The next prime is 1320018079. The reversal of 1320018071 is 1708100231.

It is a happy number.

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 1320018071 - 2² = 1320018067 is a prime.

It is a super-2 number, since 2×1320018071² = 3484895415533122082, 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 (1320018079) 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, 55706 + ... + 75783.

It is an arithmetic number, because the mean of its divisors is an integer number (330039900).

Almost surely, 2^1320018071 is an apocalyptic number.

1320018071 is a deficient number, since it is larger than the sum of its proper divisors (141529).

1320018071 is a wasteful number, since it uses less digits than its factorization.

1320018071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141528.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 1320018071 is about 36332.0529422712. The cubic root of 1320018071 is about 1096.9663163192.

The spelling of 1320018071 in words is "one billion, three hundred twenty million, eighteen thousand, seventy-one".