1618731604753 has 2 divisors, whose sum is σ = 1618731604754. Its totient is φ = 1618731604752.

The previous prime is 1618731604729. The next prime is 1618731604801. The reversal of 1618731604753 is 3574061378161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1554627441409 + 64104163344 = 1246847^2 + 253188^2 .

It is a cyclic number.

It is not a de Polignac number, because 1618731604753 - 2³³ = 1610141670161 is a prime.

It is a super-2 number, since 2×1618731604753² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1618731604753.

It is not a weakly prime, because it can be changed into another prime (1618731605753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809365802376 + 809365802377.

It is an arithmetic number, because the mean of its divisors is an integer number (809365802377).

Almost surely, 2^{1618731604753} is an apocalyptic number.

It is an amenable number.

1618731604753 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618731604753 is an equidigital number, since it uses as much as digits as its factorization.

1618731604753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 1618731604753 in words is "one trillion, six hundred eighteen billion, seven hundred thirty-one million, six hundred four thousand, seven hundred fifty-three".