1320487837 has 8 divisors (see below), whose sum is σ = 1335237120. Its totient is φ = 1305771600.

The previous prime is 1320487813. The next prime is 1320487841. The reversal of 1320487837 is 7387840231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320487837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320487793 and 1320487802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320487877) 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 7 ways as a sum of consecutive naturals, for example, 76948 + ... + 92530.

It is an arithmetic number, because the mean of its divisors is an integer number (166904640).

Almost surely, 2^1320487837 is an apocalyptic number.

It is an amenable number.

1320487837 is a deficient number, since it is larger than the sum of its proper divisors (14749283).

1320487837 is a wasteful number, since it uses less digits than its factorization.

1320487837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16523.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 1320487837 is about 36338.5172647427. The cubic root of 1320487837 is about 1097.0964297805.

The spelling of 1320487837 in words is "one billion, three hundred twenty million, four hundred eighty-seven thousand, eight hundred thirty-seven".