1349215205 has 8 divisors (see below), whose sum is σ = 1743601272. Its totient is φ = 996343488.

The previous prime is 1349215199. The next prime is 1349215207. The reversal of 1349215205 is 5025129431.

It can be written as a sum of positive squares in 4 ways, for example, as 2765569 + 1346449636 = 1663^2 + 36694^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1349215205 - 2¹⁸ = 1348953061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1349215207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10378514 + ... + 10378643.

It is an arithmetic number, because the mean of its divisors is an integer number (217950159).

Almost surely, 2^1349215205 is an apocalyptic number.

It is an amenable number.

1349215205 is a deficient number, since it is larger than the sum of its proper divisors (394386067).

1349215205 is a wasteful number, since it uses less digits than its factorization.

1349215205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20757175.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1349215205 is about 36731.6648819516. The cubic root of 1349215205 is about 1104.9952444121.

The spelling of 1349215205 in words is "one billion, three hundred forty-nine million, two hundred fifteen thousand, two hundred five".