9980123919 has 8 divisors (see below), whose sum is σ = 13358610480. Its totient is φ = 6627526656.

The previous prime is 9980123917. The next prime is 9980123927. The reversal of 9980123919 is 9193210899.

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

It is not a de Polignac number, because 9980123919 - 2¹ = 9980123917 is a prime.

It is a super-2 number, since 2×9980123919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9980123917) 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, 6471424 + ... + 6472965.

It is an arithmetic number, because the mean of its divisors is an integer number (1669826310).

Almost surely, 2^9980123919 is an apocalyptic number.

9980123919 is a deficient number, since it is larger than the sum of its proper divisors (3378486561).

9980123919 is a wasteful number, since it uses less digits than its factorization.

9980123919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12944649.

The product of its (nonzero) digits is 314928, while the sum is 51.

The square root of 9980123919 is about 99900.5701635381. The cubic root of 9980123919 is about 2153.0063526749.

The spelling of 9980123919 in words is "nine billion, nine hundred eighty million, one hundred twenty-three thousand, nine hundred nineteen".