1347251668 has 36 divisors (see below), whose sum is σ = 2754483732. Its totient is φ = 574896000.

The previous prime is 1347251623. The next prime is 1347251671. The reversal of 1347251668 is 8661527431.

It can be written as a sum of positive squares in 2 ways, for example, as 396886084 + 950365584 = 19922^2 + 30828^2 .

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30918 + ... + 60418.

It is an arithmetic number, because the mean of its divisors is an integer number (76513437).

Almost surely, 2^1347251668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1347251668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1377241866).

1347251668 is an abundant number, since it is smaller than the sum of its proper divisors (1407232064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1347251668 is a wasteful number, since it uses less digits than its factorization.

1347251668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29752 (or 29743 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 1347251668 is about 36704.9270262182. The cubic root of 1347251668 is about 1104.4589443900.

The spelling of 1347251668 in words is "one billion, three hundred forty-seven million, two hundred fifty-one thousand, six hundred sixty-eight".