19007846940 has 24 divisors (see below), whose sum is σ = 53221971600. Its totient is φ = 5068759168.

The previous prime is 19007846933. The next prime is 19007846947. The reversal of 19007846940 is 4964870091.

It is an interprime number because it is at equal distance from previous prime (19007846933) and next prime (19007846947).

It is a super-4 number, since 4×19007846940⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 19007846940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19007846947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158398665 + ... + 158398784.

It is an arithmetic number, because the mean of its divisors is an integer number (2217582150).

Almost surely, 2^19007846940 is an apocalyptic number.

19007846940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19007846940 is an abundant number, since it is smaller than the sum of its proper divisors (34214124660).

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

19007846940 is a wasteful number, since it uses less digits than its factorization.

19007846940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316797461 (or 316797459 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 19007846940 in words is "nineteen billion, seven million, eight hundred forty-six thousand, nine hundred forty".