19129720462 has 4 divisors (see below), whose sum is σ = 28694580696. Its totient is φ = 9564860230.

The previous prime is 19129720409. The next prime is 19129720481. The reversal of 19129720462 is 26402792191.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×19129720462² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4782430114 + ... + 4782430117.

It is an arithmetic number, because the mean of its divisors is an integer number (7173645174).

Almost surely, 2^19129720462 is an apocalyptic number.

19129720462 is a deficient number, since it is larger than the sum of its proper divisors (9564860234).

19129720462 is an equidigital number, since it uses as much as digits as its factorization.

19129720462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9564860233.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 19129720462 in words is "nineteen billion, one hundred twenty-nine million, seven hundred twenty thousand, four hundred sixty-two".