19429161456 has 40 divisors (see below), whose sum is σ = 51139026000. Its totient is φ = 6354190336.

The previous prime is 19429161419. The next prime is 19429161457. The reversal of 19429161456 is 65416192491.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19429161457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3816081 + ... + 3821168.

It is an arithmetic number, because the mean of its divisors is an integer number (1278475650).

Almost surely, 2^19429161456 is an apocalyptic number.

19429161456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19429161456 is an abundant number, since it is smaller than the sum of its proper divisors (31709864544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19429161456 is a wasteful number, since it uses less digits than its factorization.

19429161456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7637313 (or 7637307 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The spelling of 19429161456 in words is "nineteen billion, four hundred twenty-nine million, one hundred sixty-one thousand, four hundred fifty-six".