1018452261871 has 8 divisors (see below), whose sum is σ = 1111065026688. Its totient is φ = 925843863000.

The previous prime is 1018452261823. The next prime is 1018452261899. The reversal of 1018452261871 is 1781622548101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1018452261871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018452261821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593865 + ... + 1545826.

It is an arithmetic number, because the mean of its divisors is an integer number (138883128336).

Almost surely, 2^{1018452261871} is an apocalyptic number.

1018452261871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1018452261871 is a deficient number, since it is larger than the sum of its proper divisors (92612764817).

1018452261871 is a wasteful number, since it uses less digits than its factorization.

1018452261871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182973.

The product of its (nonzero) digits is 215040, while the sum is 46.

The spelling of 1018452261871 in words is "one trillion, eighteen billion, four hundred fifty-two million, two hundred sixty-one thousand, eight hundred seventy-one".