1618398626871 has 32 divisors (see below), whose sum is σ = 2368773146880. Its totient is φ = 976859403264.

The previous prime is 1618398626797. The next prime is 1618398626969. The reversal of 1618398626871 is 1786268938161.

It is a happy number.

It is not a de Polignac number, because 1618398626871 - 2⁹ = 1618398626359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1618398626171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1348506 + ... + 2248391.

It is an arithmetic number, because the mean of its divisors is an integer number (74024160840).

Almost surely, 2^{1618398626871} is an apocalyptic number.

1618398626871 is a deficient number, since it is larger than the sum of its proper divisors (750374520009).

1618398626871 is a wasteful number, since it uses less digits than its factorization.

1618398626871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3597135.

The product of its digits is 41803776, while the sum is 66.

The spelling of 1618398626871 in words is "one trillion, six hundred eighteen billion, three hundred ninety-eight million, six hundred twenty-six thousand, eight hundred seventy-one".