188930981484 has 144 divisors (see below), whose sum is σ = 557374272000. Its totient is φ = 53938138464.

The previous prime is 188930981467. The next prime is 188930981537. The reversal of 188930981484 is 484189039881.

188930981484 is a `hidden beast` number, since 188 + 9 + 309 + 8 + 148 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18010489 + ... + 18020975.

Almost surely, 2^188930981484 is an apocalyptic number.

188930981484 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188930981484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278687136000).

188930981484 is an abundant number, since it is smaller than the sum of its proper divisors (368443290516).

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

188930981484 is a wasteful number, since it uses less digits than its factorization.

188930981484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11977 (or 11958 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 63.

The spelling of 188930981484 in words is "one hundred eighty-eight billion, nine hundred thirty million, nine hundred eighty-one thousand, four hundred eighty-four".