19980323349 has 24 divisors (see below), whose sum is σ = 31574616480. Its totient is φ = 11201901984.

The previous prime is 19980323347. The next prime is 19980323351. The reversal of 19980323349 is 94332308991.

It is an interprime number because it is at equal distance from previous prime (19980323347) and next prime (19980323351).

It is not a de Polignac number, because 19980323349 - 2¹ = 19980323347 is a prime.

It is a super-2 number, since 2×19980323349² (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 (19980323347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1274479 + ... + 1290060.

It is an arithmetic number, because the mean of its divisors is an integer number (1315609020).

Almost surely, 2^19980323349 is an apocalyptic number.

It is an amenable number.

19980323349 is a deficient number, since it is larger than the sum of its proper divisors (11594293131).

19980323349 is a wasteful number, since it uses less digits than its factorization.

19980323349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564609 (or 2564602 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 51.

The spelling of 19980323349 in words is "nineteen billion, nine hundred eighty million, three hundred twenty-three thousand, three hundred forty-nine".