2118826031690 has 32 divisors (see below), whose sum is σ = 3948083112960. Its totient is φ = 817748769600.

The previous prime is 2118826031677. The next prime is 2118826031713. The reversal of 2118826031690 is 961306288112.

It is a happy number.

It is a super-2 number, since 2×2118826031690² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2056856 + ... + 2910035.

It is an arithmetic number, because the mean of its divisors is an integer number (123377597280).

Almost surely, 2^{2118826031690} is an apocalyptic number.

2118826031690 is a deficient number, since it is larger than the sum of its proper divisors (1829257081270).

2118826031690 is a wasteful number, since it uses less digits than its factorization.

2118826031690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4968398.

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 2118826031690 in words is "two trillion, one hundred eighteen billion, eight hundred twenty-six million, thirty-one thousand, six hundred ninety".