2118346786 has 4 divisors (see below), whose sum is σ = 3177520182. Its totient is φ = 1059173392.

The previous prime is 2118346751. The next prime is 2118346787. The reversal of 2118346786 is 6876438112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2099380761 + 18966025 = 45819^2 + 4355^2 .

It is not an unprimeable number, because it can be changed into a prime (2118346787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 529586695 + ... + 529586698.

Almost surely, 2^2118346786 is an apocalyptic number.

2118346786 is a deficient number, since it is larger than the sum of its proper divisors (1059173396).

2118346786 is a wasteful number, since it uses less digits than its factorization.

2118346786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059173395.

The product of its digits is 387072, while the sum is 46.

The square root of 2118346786 is about 46025.5014747259. The cubic root of 2118346786 is about 1284.2976446099.

The spelling of 2118346786 in words is "two billion, one hundred eighteen million, three hundred forty-six thousand, seven hundred eighty-six".