1018493753449 has 16 divisors (see below), whose sum is σ = 1063292909184. Its totient is φ = 974778336000.

The previous prime is 1018493753383. The next prime is 1018493753483. The reversal of 1018493753449 is 9443573948101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1018493753449 - 2¹⁹ = 1018493229161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1018493753393 and 1018493753402.

It is not an unprimeable number, because it can be changed into a prime (1018493759449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48352 + ... + 1428049.

It is an arithmetic number, because the mean of its divisors is an integer number (66455806824).

Almost surely, 2^{1018493753449} is an apocalyptic number.

It is an amenable number.

1018493753449 is a deficient number, since it is larger than the sum of its proper divisors (44799155735).

1018493753449 is a wasteful number, since it uses less digits than its factorization.

1018493753449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476768.

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 1018493753449 in words is "one trillion, eighteen billion, four hundred ninety-three million, seven hundred fifty-three thousand, four hundred forty-nine".