189001903340 has 24 divisors (see below), whose sum is σ = 420251291712. Its totient is φ = 71153657600.

The previous prime is 189001903339. The next prime is 189001903373. The reversal of 189001903340 is 43309100981.

It is a happy number.

It is a super-2 number, since 2×189001903340² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 189001903294 and 189001903303.

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, 277943636 + ... + 277944315.

It is an arithmetic number, because the mean of its divisors is an integer number (17510470488).

Almost surely, 2^189001903340 is an apocalyptic number.

189001903340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189001903340 is an abundant number, since it is smaller than the sum of its proper divisors (231249388372).

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

189001903340 is a wasteful number, since it uses less digits than its factorization.

189001903340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555887977 (or 555887975 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 189001903340 in words is "one hundred eighty-nine billion, one million, nine hundred three thousand, three hundred forty".