1018322581099 has 8 divisors (see below), whose sum is σ = 1071941207040. Its totient is φ = 964706225256.

The previous prime is 1018322581097. The next prime is 1018322581139. The reversal of 1018322581099 is 9901852238101.

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

It is a cyclic number.

It is not a de Polignac number, because 1018322581099 - 2¹ = 1018322581097 is a prime.

It is a super-2 number, since 2×1018322581099² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1018322581097) 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, 395142 + ... + 1480804.

It is an arithmetic number, because the mean of its divisors is an integer number (133992650880).

Almost surely, 2^{1018322581099} is an apocalyptic number.

1018322581099 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1018322581099 is a deficient number, since it is larger than the sum of its proper divisors (53618625941).

1018322581099 is a wasteful number, since it uses less digits than its factorization.

1018322581099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135049.

The product of its (nonzero) digits is 311040, while the sum is 49.

The spelling of 1018322581099 in words is "one trillion, eighteen billion, three hundred twenty-two million, five hundred eighty-one thousand, ninety-nine".