19537965740 has 12 divisors (see below), whose sum is σ = 41029728096. Its totient is φ = 7815186288.

The previous prime is 19537965721. The next prime is 19537965827. The reversal of 19537965740 is 4756973591.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488449124 + ... + 488449163.

It is an arithmetic number, because the mean of its divisors is an integer number (3419144008).

Almost surely, 2^19537965740 is an apocalyptic number.

19537965740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19537965740 is an abundant number, since it is smaller than the sum of its proper divisors (21491762356).

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

19537965740 is a wasteful number, since it uses less digits than its factorization.

19537965740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976898296 (or 976898294 counting only the distinct ones).

The product of its (nonzero) digits is 7144200, while the sum is 56.

The spelling of 19537965740 in words is "nineteen billion, five hundred thirty-seven million, nine hundred sixty-five thousand, seven hundred forty".