19461914439 has 16 divisors (see below), whose sum is σ = 29539033344. Its totient is φ = 11282268800.

The previous prime is 19461914431. The next prime is 19461914477. The reversal of 19461914439 is 93441916491.

It is not a de Polignac number, because 19461914439 - 2³ = 19461914431 is a prime.

It is a super-2 number, since 2×19461914439² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19461914391 and 19461914400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19461914431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12820002 + ... + 12821519.

It is an arithmetic number, because the mean of its divisors is an integer number (1846189584).

Almost surely, 2^19461914439 is an apocalyptic number.

19461914439 is a deficient number, since it is larger than the sum of its proper divisors (10077118905).

19461914439 is a wasteful number, since it uses less digits than its factorization.

19461914439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25641558.

The product of its digits is 839808, while the sum is 51.

The spelling of 19461914439 in words is "nineteen billion, four hundred sixty-one million, nine hundred fourteen thousand, four hundred thirty-nine".