1940998698 has 24 divisors (see below), whose sum is σ = 4452880068. Its totient is φ = 608940672.

The previous prime is 1940998667. The next prime is 1940998699. The reversal of 1940998698 is 8968990491.

It can be written as a sum of positive squares in 2 ways, for example, as 1462833009 + 478165689 = 38247^2 + 21867^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1940998699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3171261 + ... + 3171872.

Almost surely, 2^1940998698 is an apocalyptic number.

1940998698 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1940998698 is an abundant number, since it is smaller than the sum of its proper divisors (2511881370).

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

1940998698 is a wasteful number, since it uses less digits than its factorization.

1940998698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343158 (or 6343155 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 63.

The square root of 1940998698 is about 44056.7667674331. The cubic root of 1940998698 is about 1247.4076832046.

The spelling of 1940998698 in words is "one billion, nine hundred forty million, nine hundred ninety-eight thousand, six hundred ninety-eight".