1468938181 has 2 divisors, whose sum is σ = 1468938182. Its totient is φ = 1468938180.

The previous prime is 1468938157. The next prime is 1468938197. The reversal of 1468938181 is 1818398641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1146161025 + 322777156 = 33855^2 + 17966^2 .

It is an emirp because it is prime and its reverse (1818398641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1468938181 - 2¹³ = 1468929989 is a prime.

It is a super-2 number, since 2×1468938181² = 4315558759199177522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1468938881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 734469090 + 734469091.

It is an arithmetic number, because the mean of its divisors is an integer number (734469091).

Almost surely, 2^1468938181 is an apocalyptic number.

It is an amenable number.

1468938181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1468938181 is an equidigital number, since it uses as much as digits as its factorization.

1468938181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 49.

The square root of 1468938181 is about 38326.7293282378. The cubic root of 1468938181 is about 1136.7575301481.

The spelling of 1468938181 in words is "one billion, four hundred sixty-eight million, nine hundred thirty-eight thousand, one hundred eighty-one".