189437339536 has 45 divisors (see below), whose sum is σ = 369407882641. Its totient is φ = 94110198656.

The previous prime is 189437339503. The next prime is 189437339557. The reversal of 189437339536 is 635933734981.

The square root of 189437339536 is 435244.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 38470899600 + 150966439936 = 196140^2 + 388544^2 .

It is a super-2 number, since 2×189437339536² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 405647175 + ... + 405647641.

Almost surely, 2^189437339536 is an apocalyptic number.

189437339536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

189437339536 is the 435244-th square number.

It is an amenable number.

189437339536 is a deficient number, since it is larger than the sum of its proper divisors (179970543105).

189437339536 is an frugal number, since it uses more digits than its factorization.

189437339536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408 (or 702 counting only the distinct ones).

The product of its digits is 44089920, while the sum is 61.

The spelling of 189437339536 in words is "one hundred eighty-nine billion, four hundred thirty-seven million, three hundred thirty-nine thousand, five hundred thirty-six".