1349936749 has 8 divisors (see below), whose sum is σ = 1584482048. Its totient is φ = 1125815760.

The previous prime is 1349936741. The next prime is 1349936779. The reversal of 1349936749 is 9476399431.

It is a happy number.

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 1349936749 - 2³ = 1349936741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1349936749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1349936741) 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, 2605797 + ... + 2606314.

It is an arithmetic number, because the mean of its divisors is an integer number (198060256).

Almost surely, 2^1349936749 is an apocalyptic number.

It is an amenable number.

1349936749 is a deficient number, since it is larger than the sum of its proper divisors (234545299).

1349936749 is an equidigital number, since it uses as much as digits as its factorization.

1349936749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5212155.

The product of its digits is 4408992, while the sum is 55.

The square root of 1349936749 is about 36741.4853945782. The cubic root of 1349936749 is about 1105.1921886798.

The spelling of 1349936749 in words is "one billion, three hundred forty-nine million, nine hundred thirty-six thousand, seven hundred forty-nine".