19737449149 has 8 divisors (see below), whose sum is σ = 22467926592. Its totient is φ = 17162999040.

The previous prime is 19737449119. The next prime is 19737449161. The reversal of 19737449149 is 94194473791.

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

It is not a de Polignac number, because 19737449149 - 2⁹ = 19737448637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19737449093 and 19737449102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19737449119) 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 7 ways as a sum of consecutive naturals, for example, 39006564 + ... + 39007069.

It is an arithmetic number, because the mean of its divisors is an integer number (2808490824).

Almost surely, 2^19737449149 is an apocalyptic number.

It is an amenable number.

19737449149 is a deficient number, since it is larger than the sum of its proper divisors (2730477443).

19737449149 is a wasteful number, since it uses less digits than its factorization.

19737449149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78013667.

The product of its digits is 6858432, while the sum is 58.

The spelling of 19737449149 in words is "nineteen billion, seven hundred thirty-seven million, four hundred forty-nine thousand, one hundred forty-nine".