2086398698 has 16 divisors (see below), whose sum is σ = 3250306440. Its totient is φ = 1003597056.

The previous prime is 2086398679. The next prime is 2086398751. The reversal of 2086398698 is 8968936802.

It can be written as a sum of positive squares in 4 ways, for example, as 1883820409 + 202578289 = 43403^2 + 14233^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151811 + ... + 164982.

Almost surely, 2^2086398698 is an apocalyptic number.

2086398698 is a deficient number, since it is larger than the sum of its proper divisors (1163907742).

2086398698 is a wasteful number, since it uses less digits than its factorization.

2086398698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316921.

The product of its (nonzero) digits is 8957952, while the sum is 59.

The square root of 2086398698 is about 45677.1135033728. The cubic root of 2086398698 is about 1277.8084851101.

The spelling of 2086398698 in words is "two billion, eighty-six million, three hundred ninety-eight thousand, six hundred ninety-eight".