20137031998 has 8 divisors (see below), whose sum is σ = 31982344992. Its totient is φ = 9476250336.

The previous prime is 20137031927. The next prime is 20137032001. The reversal of 20137031998 is 89913073102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296132790 + ... + 296132857.

It is an arithmetic number, because the mean of its divisors is an integer number (3997793124).

Almost surely, 2^20137031998 is an apocalyptic number.

20137031998 is a deficient number, since it is larger than the sum of its proper divisors (11845312994).

20137031998 is a wasteful number, since it uses less digits than its factorization.

20137031998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592265666.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 20137031998 in words is "twenty billion, one hundred thirty-seven million, thirty-one thousand, nine hundred ninety-eight".