1351161549 has 12 divisors (see below), whose sum is σ = 1952617212. Its totient is φ = 900340800.

The previous prime is 1351161503. The next prime is 1351161551. The reversal of 1351161549 is 9451611531.

1351161549 is a `hidden beast` number, since 1 + 3 + 51 + 1 + 61 + 549 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 713851524 + 637310025 = 26718^2 + 25245^2 .

It is not a de Polignac number, because 1351161549 - 2¹¹ = 1351159501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351169549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15792 + ... + 54329.

It is an arithmetic number, because the mean of its divisors is an integer number (162718101).

Almost surely, 2^1351161549 is an apocalyptic number.

It is an amenable number.

1351161549 is a deficient number, since it is larger than the sum of its proper divisors (601455663).

1351161549 is a wasteful number, since it uses less digits than its factorization.

1351161549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72268 (or 72265 counting only the distinct ones).

The product of its digits is 16200, while the sum is 36.

The square root of 1351161549 is about 36758.1494229511. The cubic root of 1351161549 is about 1105.5263352521.

The spelling of 1351161549 in words is "one billion, three hundred fifty-one million, one hundred sixty-one thousand, five hundred forty-nine".