189545655478 has 8 divisors (see below), whose sum is σ = 288562042872. Its totient is φ = 93358307856.

The previous prime is 189545655433. The next prime is 189545655479. The reversal of 189545655478 is 874556545981.

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

It is a Harshad number since it is a multiple of its sum of digits (67).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189545655479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707259775 + ... + 707260042.

It is an arithmetic number, because the mean of its divisors is an integer number (36070255359).

Almost surely, 2^189545655478 is an apocalyptic number.

189545655478 is a deficient number, since it is larger than the sum of its proper divisors (99016387394).

189545655478 is a wasteful number, since it uses less digits than its factorization.

189545655478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414519886.

The product of its digits is 241920000, while the sum is 67.

The spelling of 189545655478 in words is "one hundred eighty-nine billion, five hundred forty-five million, six hundred fifty-five thousand, four hundred seventy-eight".