1018917126690 has 64 divisors (see below), whose sum is σ = 2598874035840. Its totient is φ = 254777523200.

The previous prime is 1018917126589. The next prime is 1018917126709. The reversal of 1018917126690 is 966217198101.

It is a super-2 number, since 2×1018917126690² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3576336 + ... + 3850715.

It is an arithmetic number, because the mean of its divisors is an integer number (40607406810).

Almost surely, 2^{1018917126690} is an apocalyptic number.

1018917126690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1018917126690 is an abundant number, since it is smaller than the sum of its proper divisors (1579956909150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1018917126690 is a wasteful number, since it uses less digits than its factorization.

1018917126690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7427347.

The product of its (nonzero) digits is 326592, while the sum is 51.

The spelling of 1018917126690 in words is "one trillion, eighteen billion, nine hundred seventeen million, one hundred twenty-six thousand, six hundred ninety".