191362175940 has 48 divisors (see below), whose sum is σ = 577030563648. Its totient is φ = 47104535424.

The previous prime is 191362175933. The next prime is 191362175941. The reversal of 191362175940 is 49571263191.

It is a self number, because there is not a number n which added to its sum of digits gives 191362175940.

It is not an unprimeable number, because it can be changed into a prime (191362175941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122667282 + ... + 122668841.

It is an arithmetic number, because the mean of its divisors is an integer number (12021470076).

Almost surely, 2^191362175940 is an apocalyptic number.

191362175940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191362175940 is an abundant number, since it is smaller than the sum of its proper divisors (385668387708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191362175940 is a wasteful number, since it uses less digits than its factorization.

191362175940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245336148 (or 245336146 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 191362175940 in words is "one hundred ninety-one billion, three hundred sixty-two million, one hundred seventy-five thousand, nine hundred forty".