1351266641 has 12 divisors (see below), whose sum is σ = 1458309132. Its totient is φ = 1247740416.

The previous prime is 1351266611. The next prime is 1351266661. The reversal of 1351266641 is 1466621531.

It can be written as a sum of positive squares in 6 ways, for example, as 26306641 + 1324960000 = 5129^2 + 36400^2 .

It is not a de Polignac number, because 1351266641 - 2³⁰ = 277524817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1351266611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33605 + ... + 61901.

It is an arithmetic number, because the mean of its divisors is an integer number (121525761).

Almost surely, 2^1351266641 is an apocalyptic number.

It is an amenable number.

1351266641 is a deficient number, since it is larger than the sum of its proper divisors (107042491).

1351266641 is an equidigital number, since it uses as much as digits as its factorization.

1351266641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28420 (or 28367 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 1351266641 is about 36759.5789012878. The cubic root of 1351266641 is about 1105.5549967549.

The spelling of 1351266641 in words is "one billion, three hundred fifty-one million, two hundred sixty-six thousand, six hundred forty-one".