1493123112989 has 2 divisors, whose sum is σ = 1493123112990. Its totient is φ = 1493123112988.

The previous prime is 1493123112959. The next prime is 1493123113081. The reversal of 1493123112989 is 9892113213941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1393698302500 + 99424810489 = 1180550^2 + 315317^2 .

It is a cyclic number.

It is not a de Polignac number, because 1493123112989 - 2¹⁶ = 1493123047453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1493123112989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1493123112959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746561556494 + 746561556495.

It is an arithmetic number, because the mean of its divisors is an integer number (746561556495).

Almost surely, 2^{1493123112989} is an apocalyptic number.

It is an amenable number.

1493123112989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1493123112989 is an equidigital number, since it uses as much as digits as its factorization.

1493123112989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 53.

The spelling of 1493123112989 in words is "one trillion, four hundred ninety-three billion, one hundred twenty-three million, one hundred twelve thousand, nine hundred eighty-nine".