195031800 has 144 divisors (see below), whose sum is σ = 679409640. Its totient is φ = 51995520.

The previous prime is 195031787. The next prime is 195031807. The reversal of 195031800 is 8130591.

195031800 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×195031800² = 76074806022480000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195031807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 46594 + ... + 50606.

Almost surely, 2^195031800 is an apocalyptic number.

195031800 is a gapful number since it is divisible by the number (10) 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 195031800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339704820).

195031800 is an abundant number, since it is smaller than the sum of its proper divisors (484377840).

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

195031800 is a wasteful number, since it uses less digits than its factorization.

195031800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044 (or 4023 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 195031800 is about 13965.3786200017. The cubic root of 195031800 is about 579.9205202228.

The spelling of 195031800 in words is "one hundred ninety-five million, thirty-one thousand, eight hundred".