195253149 has 32 divisors (see below), whose sum is σ = 321640704. Its totient is φ = 102597120.

The previous prime is 195253147. The next prime is 195253183. The reversal of 195253149 is 941352591.

It is not a de Polignac number, because 195253149 - 2¹ = 195253147 is a prime.

It is a super-3 number, since 3×195253149³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195253147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78769 + ... + 81209.

It is an arithmetic number, because the mean of its divisors is an integer number (10051272).

Almost surely, 2^195253149 is an apocalyptic number.

It is an amenable number.

195253149 is a deficient number, since it is larger than the sum of its proper divisors (126387555).

195253149 is a wasteful number, since it uses less digits than its factorization.

195253149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757.

The product of its digits is 48600, while the sum is 39.

The square root of 195253149 is about 13973.3012921070. The cubic root of 195253149 is about 580.1398285540.

The spelling of 195253149 in words is "one hundred ninety-five million, two hundred fifty-three thousand, one hundred forty-nine".