19507987416 has 64 divisors (see below), whose sum is σ = 49128599520. Its totient is φ = 6454978560.

The previous prime is 19507987399. The next prime is 19507987417. The reversal of 19507987416 is 61478970591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19507987417) 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, 2572206 + ... + 2579778.

Almost surely, 2^19507987416 is an apocalyptic number.

It is an amenable number.

19507987416 is an abundant number, since it is smaller than the sum of its proper divisors (29620612104).

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

19507987416 is a wasteful number, since it uses less digits than its factorization.

19507987416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8356 (or 8352 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 57.

The spelling of 19507987416 in words is "nineteen billion, five hundred seven million, nine hundred eighty-seven thousand, four hundred sixteen".