1018241469851 has 4 divisors (see below), whose sum is σ = 1018243754592. Its totient is φ = 1018239185112.

The previous prime is 1018241469769. The next prime is 1018241469857. The reversal of 1018241469851 is 1589641428101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1018241469851 - 2²² = 1018237275547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1018241469851.

It is not an unprimeable number, because it can be changed into a prime (1018241469857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232076 + ... + 1445801.

It is an arithmetic number, because the mean of its divisors is an integer number (254560938648).

Almost surely, 2^{1018241469851} is an apocalyptic number.

1018241469851 is a deficient number, since it is larger than the sum of its proper divisors (2284741).

1018241469851 is an equidigital number, since it uses as much as digits as its factorization.

1018241469851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284740.

The product of its (nonzero) digits is 552960, while the sum is 50.

The spelling of 1018241469851 in words is "one trillion, eighteen billion, two hundred forty-one million, four hundred sixty-nine thousand, eight hundred fifty-one".