188443961970 has 64 divisors (see below), whose sum is σ = 494045236224. Its totient is φ = 45621840320.

The previous prime is 188443961891. The next prime is 188443961989. The reversal of 188443961970 is 79169344881.

It is a super-2 number, since 2×188443961970² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139092 + ... + 629471.

It is an arithmetic number, because the mean of its divisors is an integer number (7719456816).

Almost surely, 2^188443961970 is an apocalyptic number.

188443961970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188443961970 is an abundant number, since it is smaller than the sum of its proper divisors (305601274254).

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

188443961970 is a wasteful number, since it uses less digits than its factorization.

188443961970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769327.

The product of its (nonzero) digits is 10450944, while the sum is 60.

The spelling of 188443961970 in words is "one hundred eighty-eight billion, four hundred forty-three million, nine hundred sixty-one thousand, nine hundred seventy".