189205405460 has 48 divisors (see below), whose sum is σ = 398443110912. Its totient is φ = 75470572800.

The previous prime is 189205405457. The next prime is 189205405463. The reversal of 189205405460 is 64504502981.

It is an interprime number because it is at equal distance from previous prime (189205405457) and next prime (189205405463).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189205405463) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25020080 + ... + 25027640.

It is an arithmetic number, because the mean of its divisors is an integer number (8300898144).

Almost surely, 2^189205405460 is an apocalyptic number.

189205405460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189205405460 is an abundant number, since it is smaller than the sum of its proper divisors (209237705452).

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

189205405460 is a wasteful number, since it uses less digits than its factorization.

189205405460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10904 (or 10902 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 189205405460 in words is "one hundred eighty-nine billion, two hundred five million, four hundred five thousand, four hundred sixty".