201947379850 has 48 divisors (see below), whose sum is σ = 385307213760. Its totient is φ = 78701500800.

The previous prime is 201947379839. The next prime is 201947379859. The reversal of 201947379850 is 58973749102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201947379791 and 201947379800.

It is not an unprimeable number, because it can be changed into a prime (201947379859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1448299 + ... + 1581601.

It is an arithmetic number, because the mean of its divisors is an integer number (8027233620).

Almost surely, 2^201947379850 is an apocalyptic number.

201947379850 is a deficient number, since it is larger than the sum of its proper divisors (183359833910).

201947379850 is a wasteful number, since it uses less digits than its factorization.

201947379850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134095 (or 134090 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 201947379850 in words is "two hundred one billion, nine hundred forty-seven million, three hundred seventy-nine thousand, eight hundred fifty".