1868709698 has 32 divisors (see below), whose sum is σ = 3050826240. Its totient is φ = 855204480.

The previous prime is 1868709697. The next prime is 1868709719. The reversal of 1868709698 is 8969078681.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1868709698.

It is not an unprimeable number, because it can be changed into a prime (1868709697) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1102940 + ... + 1104632.

It is an arithmetic number, because the mean of its divisors is an integer number (95338320).

Almost surely, 2^1868709698 is an apocalyptic number.

1868709698 is a deficient number, since it is larger than the sum of its proper divisors (1182116542).

1868709698 is a wasteful number, since it uses less digits than its factorization.

1868709698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682.

The product of its (nonzero) digits is 10450944, while the sum is 62.

The square root of 1868709698 is about 43228.5750169954. The cubic root of 1868709698 is about 1231.7255394578.

The spelling of 1868709698 in words is "one billion, eight hundred sixty-eight million, seven hundred nine thousand, six hundred ninety-eight".