20131853208 has 32 divisors (see below), whose sum is σ = 50346111600. Its totient is φ = 6708420608.

The previous prime is 20131853177. The next prime is 20131853233. The reversal of 20131853208 is 80235813102.

It is a congruent 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, 61641 + ... + 209912.

Almost surely, 2^20131853208 is an apocalyptic number.

It is an amenable number.

20131853208 is an abundant number, since it is smaller than the sum of its proper divisors (30214258392).

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

20131853208 is a wasteful number, since it uses less digits than its factorization.

20131853208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274651 (or 274647 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 20131853208 in words is "twenty billion, one hundred thirty-one million, eight hundred fifty-three thousand, two hundred eight".