1309938739219 has 4 divisors (see below), whose sum is σ = 1429024079160. Its totient is φ = 1190853399280.

The previous prime is 1309938739217. The next prime is 1309938739231. The reversal of 1309938739219 is 9129378399031.

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 1309938739219 - 2¹ = 1309938739217 is a prime.

It is a super-2 number, since 2×1309938739219² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1309938739217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59542669954 + ... + 59542669975.

It is an arithmetic number, because the mean of its divisors is an integer number (357256019790).

Almost surely, 2^{1309938739219} is an apocalyptic number.

1309938739219 is a deficient number, since it is larger than the sum of its proper divisors (119085339941).

1309938739219 is a wasteful number, since it uses less digits than its factorization.

1309938739219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119085339940.

The product of its (nonzero) digits is 19840464, while the sum is 64.

The spelling of 1309938739219 in words is "one trillion, three hundred nine billion, nine hundred thirty-eight million, seven hundred thirty-nine thousand, two hundred nineteen".