19164414420 has 72 divisors (see below), whose sum is σ = 58299774624. Its totient is φ = 5095766208.

The previous prime is 19164414389. The next prime is 19164414443. The reversal of 19164414420 is 2441446191.

It is a happy number.

19164414420 is a `hidden beast` number, since 1 + 9 + 1 + 644 + 1 + 4 + 4 + 2 + 0 = 666.

It is a super-3 number, since 3×19164414420³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90954 + ... + 215873.

It is an arithmetic number, because the mean of its divisors is an integer number (809719092).

Almost surely, 2^19164414420 is an apocalyptic number.

19164414420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19164414420 is an abundant number, since it is smaller than the sum of its proper divisors (39135360204).

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

19164414420 is a wasteful number, since it uses less digits than its factorization.

19164414420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307189 (or 307184 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 19164414420 in words is "nineteen billion, one hundred sixty-four million, four hundred fourteen thousand, four hundred twenty".