1281151348 has 12 divisors (see below), whose sum is σ = 2373898212. Its totient is φ = 602894720.

The previous prime is 1281151343. The next prime is 1281151349. The reversal of 1281151348 is 8431511821.

It can be written as a sum of positive squares in 2 ways, for example, as 403688464 + 877462884 = 20092^2 + 29622^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281151343) 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, 9420163 + ... + 9420298.

It is an arithmetic number, because the mean of its divisors is an integer number (197824851).

Almost surely, 2^1281151348 is an apocalyptic number.

It is an amenable number.

1281151348 is a deficient number, since it is larger than the sum of its proper divisors (1092746864).

1281151348 is a wasteful number, since it uses less digits than its factorization.

1281151348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18840482 (or 18840480 counting only the distinct ones).

The product of its digits is 7680, while the sum is 34.

The square root of 1281151348 is about 35793.1746007531. The cubic root of 1281151348 is about 1086.0924948381.

The spelling of 1281151348 in words is "one billion, two hundred eighty-one million, one hundred fifty-one thousand, three hundred forty-eight".