1309862968 has 8 divisors (see below), whose sum is σ = 2455993080. Its totient is φ = 654931480.

The previous prime is 1309862963. The next prime is 1309862969. The reversal of 1309862968 is 8692689031.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309862963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81866428 + ... + 81866443.

It is an arithmetic number, because the mean of its divisors is an integer number (306999135).

Almost surely, 2^1309862968 is an apocalyptic number.

It is an amenable number.

1309862968 is a deficient number, since it is larger than the sum of its proper divisors (1146130112).

1309862968 is a wasteful number, since it uses less digits than its factorization.

1309862968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163732877 (or 163732873 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 52.

The square root of 1309862968 is about 36192.0290671855. The cubic root of 1309862968 is about 1094.1460278075.

The spelling of 1309862968 in words is "one billion, three hundred nine million, eight hundred sixty-two thousand, nine hundred sixty-eight".