189942437760 has 64 divisors (see below), whose sum is σ = 605441526480. Its totient is φ = 50651316224.

The previous prime is 189942437753. The next prime is 189942437779. The reversal of 189942437760 is 67734249981.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×189942437760² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 189942437694 and 189942437703.

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, 49462257 + ... + 49466096.

Almost surely, 2^189942437760 is an apocalyptic number.

189942437760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189942437760 is an abundant number, since it is smaller than the sum of its proper divisors (415499088720).

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

189942437760 is an equidigital number, since it uses as much as digits as its factorization.

189942437760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98928375 (or 98928363 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 60.

The spelling of 189942437760 in words is "one hundred eighty-nine billion, nine hundred forty-two million, four hundred thirty-seven thousand, seven hundred sixty".