195077816 has 8 divisors (see below), whose sum is σ = 365770920. Its totient is φ = 97538904.

The previous prime is 195077797. The next prime is 195077819. The reversal of 195077816 is 618770591.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195077819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12192356 + ... + 12192371.

It is an arithmetic number, because the mean of its divisors is an integer number (45721365).

Almost surely, 2^195077816 is an apocalyptic number.

It is an amenable number.

195077816 is a deficient number, since it is larger than the sum of its proper divisors (170693104).

195077816 is a wasteful number, since it uses less digits than its factorization.

195077816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24384733 (or 24384729 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 44.

The square root of 195077816 is about 13967.0260256076. The cubic root of 195077816 is about 579.9661256475.

The spelling of 195077816 in words is "one hundred ninety-five million, seventy-seven thousand, eight hundred sixteen".