1349688292805 has 8 divisors (see below), whose sum is σ = 1619639214072. Its totient is φ = 1079741792448.

The previous prime is 1349688292783. The next prime is 1349688292811. The reversal of 1349688292805 is 5082928869431.

It can be written as a sum of positive squares in 4 ways, for example, as 162595239361 + 1187093053444 = 403231^2 + 1089538^2 .

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-1349688292805 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391694 + ... + 1689023.

It is an arithmetic number, because the mean of its divisors is an integer number (202454901759).

Almost surely, 2^{1349688292805} is an apocalyptic number.

It is an amenable number.

1349688292805 is a deficient number, since it is larger than the sum of its proper divisors (269950921267).

1349688292805 is a wasteful number, since it uses less digits than its factorization.

1349688292805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2210455.

The product of its (nonzero) digits is 59719680, while the sum is 65.

The spelling of 1349688292805 in words is "one trillion, three hundred forty-nine billion, six hundred eighty-eight million, two hundred ninety-two thousand, eight hundred five".