196537905 has 24 divisors (see below), whose sum is σ = 343981248. Its totient is φ = 103800096.

The previous prime is 196537903. The next prime is 196537937. The reversal of 196537905 is 509735691.

It is not a de Polignac number, because 196537905 - 2¹ = 196537903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (196537903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16567 + ... + 25836.

It is an arithmetic number, because the mean of its divisors is an integer number (14332552).

Almost surely, 2^196537905 is an apocalyptic number.

196537905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

196537905 is a deficient number, since it is larger than the sum of its proper divisors (147443343).

196537905 is a wasteful number, since it uses less digits than its factorization.

196537905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42517 (or 42514 counting only the distinct ones).

The product of its (nonzero) digits is 255150, while the sum is 45.

The square root of 196537905 is about 14019.1977302555. The cubic root of 196537905 is about 581.4094782654.

The spelling of 196537905 in words is "one hundred ninety-six million, five hundred thirty-seven thousand, nine hundred five".