1493895649 has 2 divisors, whose sum is σ = 1493895650. Its totient is φ = 1493895648.

The previous prime is 1493895607. The next prime is 1493895677. The reversal of 1493895649 is 9465983941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 772006225 + 721889424 = 27785^2 + 26868^2 .

It is a cyclic number.

It is not a de Polignac number, because 1493895649 - 2¹⁷ = 1493764577 is a prime.

It is a super-3 number, since 3×1493895649³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1493895593 and 1493895602.

It is not a weakly prime, because it can be changed into another prime (1493895749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746947824 + 746947825.

It is an arithmetic number, because the mean of its divisors is an integer number (746947825).

Almost surely, 2^1493895649 is an apocalyptic number.

It is an amenable number.

1493895649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1493895649 is an equidigital number, since it uses as much as digits as its factorization.

1493895649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8398080, while the sum is 58.

The square root of 1493895649 is about 38650.9462885451. The cubic root of 1493895649 is about 1143.1593007660.

The spelling of 1493895649 in words is "one billion, four hundred ninety-three million, eight hundred ninety-five thousand, six hundred forty-nine".