19740923971 has 8 divisors (see below), whose sum is σ = 19785571488. Its totient is φ = 19696320000.

The previous prime is 19740923959. The next prime is 19740923987. The reversal of 19740923971 is 17932904791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19740923971 - 2⁷ = 19740923843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19740923941) 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, 1000461 + ... + 1020001.

It is an arithmetic number, because the mean of its divisors is an integer number (2473196436).

Almost surely, 2^19740923971 is an apocalyptic number.

19740923971 is a deficient number, since it is larger than the sum of its proper divisors (44647517).

19740923971 is a wasteful number, since it uses less digits than its factorization.

19740923971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21773.

The product of its (nonzero) digits is 857304, while the sum is 52.

The spelling of 19740923971 in words is "nineteen billion, seven hundred forty million, nine hundred twenty-three thousand, nine hundred seventy-one".