189446686620 has 48 divisors (see below), whose sum is σ = 531083105280. Its totient is φ = 50458889536.

The previous prime is 189446686619. The next prime is 189446686621. The reversal of 189446686620 is 26686644981.

It is an interprime number because it is at equal distance from previous prime (189446686619) and next prime (189446686621).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189446686621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1831332 + ... + 1932011.

It is an arithmetic number, because the mean of its divisors is an integer number (11064231360).

Almost surely, 2^189446686620 is an apocalyptic number.

189446686620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189446686620 is an abundant number, since it is smaller than the sum of its proper divisors (341636418660).

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

189446686620 is a wasteful number, since it uses less digits than its factorization.

189446686620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3764194 (or 3764192 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 60.

The spelling of 189446686620 in words is "one hundred eighty-nine billion, four hundred forty-six million, six hundred eighty-six thousand, six hundred twenty".