189436964461 has 8 divisors (see below), whose sum is σ = 192512785280. Its totient is φ = 186378090912.

The previous prime is 189436964449. The next prime is 189436964473. The reversal of 189436964461 is 164469634981.

It is an interprime number because it is at equal distance from previous prime (189436964449) and next prime (189436964473).

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

It is a cyclic number.

It is not a de Polignac number, because 189436964461 - 2¹⁷ = 189436833389 is a prime.

It is a super-3 number, since 3×189436964461³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189436964461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189436964441) 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, 4214280 + ... + 4258993.

It is an arithmetic number, because the mean of its divisors is an integer number (24064098160).

Almost surely, 2^189436964461 is an apocalyptic number.

It is an amenable number.

189436964461 is a deficient number, since it is larger than the sum of its proper divisors (3075820819).

189436964461 is an equidigital number, since it uses as much as digits as its factorization.

189436964461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8473635.

The product of its digits is 26873856, while the sum is 61.

The spelling of 189436964461 in words is "one hundred eighty-nine billion, four hundred thirty-six million, nine hundred sixty-four thousand, four hundred sixty-one".