195201377149 has 4 divisors (see below), whose sum is σ = 196223374080. Its totient is φ = 194179380220.

The previous prime is 195201377123. The next prime is 195201377171. The reversal of 195201377149 is 941773102591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 941773102591 = 30091 ⋅31297501.

It is a cyclic number.

It is not a de Polignac number, because 195201377149 - 2²¹ = 195199279997 is a prime.

It is a super-2 number, since 2×195201377149² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195201377549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510998179 + ... + 510998560.

It is an arithmetic number, because the mean of its divisors is an integer number (49055843520).

Almost surely, 2^195201377149 is an apocalyptic number.

It is an amenable number.

195201377149 is a deficient number, since it is larger than the sum of its proper divisors (1021996931).

195201377149 is a wasteful number, since it uses less digits than its factorization.

195201377149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021996930.

The product of its (nonzero) digits is 476280, while the sum is 49.

The spelling of 195201377149 in words is "one hundred ninety-five billion, two hundred one million, three hundred seventy-seven thousand, one hundred forty-nine".