1349836388 has 12 divisors (see below), whose sum is σ = 2377260732. Its totient is φ = 670619040.

The previous prime is 1349836307. The next prime is 1349836409. The reversal of 1349836388 is 8836389431.

It can be written as a sum of positive squares in 2 ways, for example, as 144913444 + 1204922944 = 12038^2 + 34712^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074083 + ... + 1075338.

It is an arithmetic number, because the mean of its divisors is an integer number (198105061).

Almost surely, 2^1349836388 is an apocalyptic number.

It is an amenable number.

1349836388 is a deficient number, since it is larger than the sum of its proper divisors (1027424344).

1349836388 is a wasteful number, since it uses less digits than its factorization.

1349836388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149582 (or 2149580 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 53.

The square root of 1349836388 is about 36740.1195969746. The cubic root of 1349836388 is about 1105.1647995097.

The spelling of 1349836388 in words is "one billion, three hundred forty-nine million, eight hundred thirty-six thousand, three hundred eighty-eight".