1350781493 has 2 divisors, whose sum is σ = 1350781494. Its totient is φ = 1350781492.

The previous prime is 1350781483. The next prime is 1350781571. The reversal of 1350781493 is 3941870531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1168477489 + 182304004 = 34183^2 + 13502^2 .

It is an emirp because it is prime and its reverse (3941870531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1350781493 - 2⁴ = 1350781477 is a prime.

It is a super-2 number, since 2×1350781493² = 3649221283662618098, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1350781493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1350781423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675390746 + 675390747.

It is an arithmetic number, because the mean of its divisors is an integer number (675390747).

Almost surely, 2^1350781493 is an apocalyptic number.

It is an amenable number.

1350781493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1350781493 is an equidigital number, since it uses as much as digits as its factorization.

1350781493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 1350781493 is about 36752.9793758275. The cubic root of 1350781493 is about 1105.4226710338.

The spelling of 1350781493 in words is "one billion, three hundred fifty million, seven hundred eighty-one thousand, four hundred ninety-three".