195369520 has 40 divisors (see below), whose sum is σ = 469902960. Its totient is φ = 75452160.

The previous prime is 195369443. The next prime is 195369523. The reversal of 195369520 is 25963591.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (195369523) 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, 39786 + ... + 44425.

It is an arithmetic number, because the mean of its divisors is an integer number (11747574).

Almost surely, 2^195369520 is an apocalyptic number.

195369520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195369520 is an abundant number, since it is smaller than the sum of its proper divisors (274533440).

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

195369520 is a wasteful number, since it uses less digits than its factorization.

195369520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84253 (or 84247 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 195369520 is about 13977.4647200413. The cubic root of 195369520 is about 580.2550602323.

The spelling of 195369520 in words is "one hundred ninety-five million, three hundred sixty-nine thousand, five hundred twenty".