19549670973 has 24 divisors (see below), whose sum is σ = 31027110048. Its totient is φ = 10911440736.

The previous prime is 19549670953. The next prime is 19549670989. The reversal of 19549670973 is 37907694591.

It is not a de Polignac number, because 19549670973 - 2¹⁶ = 19549605437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19549670953) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1540086 + ... + 1552727.

It is an arithmetic number, because the mean of its divisors is an integer number (1292796252).

Almost surely, 2^19549670973 is an apocalyptic number.

It is an amenable number.

19549670973 is a deficient number, since it is larger than the sum of its proper divisors (11477439075).

19549670973 is a wasteful number, since it uses less digits than its factorization.

19549670973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3092873 (or 3092866 counting only the distinct ones).

The product of its (nonzero) digits is 12859560, while the sum is 60.

The spelling of 19549670973 in words is "nineteen billion, five hundred forty-nine million, six hundred seventy thousand, nine hundred seventy-three".