1321095908 has 72 divisors (see below), whose sum is σ = 2704607136. Its totient is φ = 562256640.

The previous prime is 1321095901. The next prime is 1321095913. The reversal of 1321095908 is 8095901231.

It is not an unprimeable number, because it can be changed into a prime (1321095901) 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 23 ways as a sum of consecutive naturals, for example, 2525735 + ... + 2526257.

It is an arithmetic number, because the mean of its divisors is an integer number (37563988).

Almost surely, 2^1321095908 is an apocalyptic number.

It is an amenable number.

1321095908 is an abundant number, since it is smaller than the sum of its proper divisors (1383511228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321095908 is a wasteful number, since it uses less digits than its factorization.

1321095908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 1321095908 is about 36346.8830575608. The cubic root of 1321095908 is about 1097.2648044602.

The spelling of 1321095908 in words is "one billion, three hundred twenty-one million, ninety-five thousand, nine hundred eight".