189812207040 has 224 divisors, whose sum is σ = 636431178240. Its totient is φ = 47796940800.

The previous prime is 189812207023. The next prime is 189812207047. The reversal of 189812207040 is 40702218981.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 189812206983 and 189812207001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189812207047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5655910 + ... + 5689370.

Almost surely, 2^189812207040 is an apocalyptic number.

189812207040 is a gapful number since it is divisible by the number (10) 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 189812207040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318215589120).

189812207040 is an abundant number, since it is smaller than the sum of its proper divisors (446618971200).

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

189812207040 is a wasteful number, since it uses less digits than its factorization.

189812207040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33811 (or 33801 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The spelling of 189812207040 in words is "one hundred eighty-nine billion, eight hundred twelve million, two hundred seven thousand, forty".