1321652939 has 4 divisors (see below), whose sum is σ = 1391213640. Its totient is φ = 1252092240.

The previous prime is 1321652929. The next prime is 1321652963. The reversal of 1321652939 is 9392561231.

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 1321652939 - 2¹⁶ = 1321587403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321652896 and 1321652905.

It is not an unprimeable number, because it can be changed into a prime (1321652929) 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, 34780322 + ... + 34780359.

It is an arithmetic number, because the mean of its divisors is an integer number (347803410).

Almost surely, 2^1321652939 is an apocalyptic number.

1321652939 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1321652939 is a deficient number, since it is larger than the sum of its proper divisors (69560701).

1321652939 is an equidigital number, since it uses as much as digits as its factorization.

1321652939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69560700.

The product of its digits is 87480, while the sum is 41.

The square root of 1321652939 is about 36354.5449565801. The cubic root of 1321652939 is about 1097.4190008420.

The spelling of 1321652939 in words is "one billion, three hundred twenty-one million, six hundred fifty-two thousand, nine hundred thirty-nine".