1493556653 has 2 divisors, whose sum is σ = 1493556654. Its totient is φ = 1493556652.

The previous prime is 1493556613. The next prime is 1493556671. The reversal of 1493556653 is 3566553941.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1414737769 + 78818884 = 37613^2 + 8878^2 .

It is an emirp because it is prime and its reverse (3566553941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1493556653 - 2¹⁶ = 1493491117 is a prime.

It is a super-2 number, since 2×1493556653² = 4461422951441124818, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1493556598 and 1493556607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1493556613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746778326 + 746778327.

It is an arithmetic number, because the mean of its divisors is an integer number (746778327).

Almost surely, 2^1493556653 is an apocalyptic number.

It is an amenable number.

1493556653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1493556653 is an equidigital number, since it uses as much as digits as its factorization.

1493556653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458000, while the sum is 47.

The square root of 1493556653 is about 38646.5606878542. The cubic root of 1493556653 is about 1143.0728253492.

The spelling of 1493556653 in words is "one billion, four hundred ninety-three million, five hundred fifty-six thousand, six hundred fifty-three".