1351891141 has 2 divisors, whose sum is σ = 1351891142. Its totient is φ = 1351891140.

The previous prime is 1351891069. The next prime is 1351891181. The reversal of 1351891141 is 1411981531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1344762241 + 7128900 = 36671^2 + 2670^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351891141 - 2¹¹ = 1351889093 is a prime.

It is a super-2 number, since 2×1351891141² = 3655219314228563762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1351891097 and 1351891106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1351891181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675945570 + 675945571.

It is an arithmetic number, because the mean of its divisors is an integer number (675945571).

Almost surely, 2^1351891141 is an apocalyptic number.

It is an amenable number.

1351891141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351891141 is an equidigital number, since it uses as much as digits as its factorization.

1351891141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 34.

The square root of 1351891141 is about 36768.0723046504. The cubic root of 1351891141 is about 1105.7252845774.

The spelling of 1351891141 in words is "one billion, three hundred fifty-one million, eight hundred ninety-one thousand, one hundred forty-one".