195666432 has 160 divisors (see below), whose sum is σ = 577463040. Its totient is φ = 58490880.

The previous prime is 195666409. The next prime is 195666433. The reversal of 195666432 is 234666591.

It is a super-2 number, since 2×195666432² = 76570705223221248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (195666433) 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, 818569 + ... + 818807.

It is an arithmetic number, because the mean of its divisors is an integer number (3609144).

Almost surely, 2^195666432 is an apocalyptic number.

195666432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195666432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288731520).

195666432 is an abundant number, since it is smaller than the sum of its proper divisors (381796608).

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

195666432 is a wasteful number, since it uses less digits than its factorization.

195666432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 298 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The square root of 195666432 is about 13988.0817841475. The cubic root of 195666432 is about 580.5488581727.

The spelling of 195666432 in words is "one hundred ninety-five million, six hundred sixty-six thousand, four hundred thirty-two".