1549927349 has 4 divisors (see below), whose sum is σ = 1641099564. Its totient is φ = 1458755136.

The previous prime is 1549927343. The next prime is 1549927399. The reversal of 1549927349 is 9437299451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9437299451 = 29 ⋅325424119.

It can be written as a sum of positive squares in 2 ways, for example, as 520159249 + 1029768100 = 22807^2 + 32090^2 .

It is a cyclic number.

It is not a de Polignac number, because 1549927349 - 2⁴ = 1549927333 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 1549927349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1549927343) 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, 45586082 + ... + 45586115.

It is an arithmetic number, because the mean of its divisors is an integer number (410274891).

Almost surely, 2^1549927349 is an apocalyptic number.

It is an amenable number.

1549927349 is a deficient number, since it is larger than the sum of its proper divisors (91172215).

1549927349 is an equidigital number, since it uses as much as digits as its factorization.

1549927349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91172214.

The product of its digits is 2449440, while the sum is 53.

The square root of 1549927349 is about 39369.1166906244. The cubic root of 1549927349 is about 1157.2764455601.

The spelling of 1549927349 in words is "one billion, five hundred forty-nine million, nine hundred twenty-seven thousand, three hundred forty-nine".