189651649055 has 8 divisors (see below), whose sum is σ = 248271249744. Its totient is φ = 137928472000.

The previous prime is 189651649051. The next prime is 189651649063. The reversal of 189651649055 is 550946156981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189651649055 - 2² = 189651649051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189651648985 and 189651649003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189651649051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1724105846 + ... + 1724105955.

It is an arithmetic number, because the mean of its divisors is an integer number (31033906218).

Almost surely, 2^189651649055 is an apocalyptic number.

189651649055 is a deficient number, since it is larger than the sum of its proper divisors (58619600689).

189651649055 is a wasteful number, since it uses less digits than its factorization.

189651649055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448211817.

The product of its (nonzero) digits is 11664000, while the sum is 59.

The spelling of 189651649055 in words is "one hundred eighty-nine billion, six hundred fifty-one million, six hundred forty-nine thousand, fifty-five".