1493038081 has 2 divisors, whose sum is σ = 1493038082. Its totient is φ = 1493038080.

The previous prime is 1493038067. The next prime is 1493038103. The reversal of 1493038081 is 1808303941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1483790400 + 9247681 = 38520^2 + 3041^2 .

It is an emirp because it is prime and its reverse (1808303941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1493038081 - 2⁹ = 1493037569 is a prime.

It is a super-2 number, since 2×1493038081² = 4458325422632325122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1493038081.

It is not a weakly prime, because it can be changed into another prime (1493038181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746519040 + 746519041.

It is an arithmetic number, because the mean of its divisors is an integer number (746519041).

Almost surely, 2^1493038081 is an apocalyptic number.

It is an amenable number.

1493038081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1493038081 is an equidigital number, since it uses as much as digits as its factorization.

1493038081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 1493038081 is about 38639.8509443295. The cubic root of 1493038081 is about 1142.9405160776.

The spelling of 1493038081 in words is "one billion, four hundred ninety-three million, thirty-eight thousand, eighty-one".