19164546340 has 24 divisors (see below), whose sum is σ = 40350643200. Its totient is φ = 7645800288.

The previous prime is 19164546311. The next prime is 19164546343. The reversal of 19164546340 is 4364546191.

It is not an unprimeable number, because it can be changed into a prime (19164546343) 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, 1243290 + ... + 1258609.

It is an arithmetic number, because the mean of its divisors is an integer number (1681276800).

Almost surely, 2^19164546340 is an apocalyptic number.

19164546340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19164546340 is an abundant number, since it is smaller than the sum of its proper divisors (21186096860).

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

19164546340 is a wasteful number, since it uses less digits than its factorization.

19164546340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502291 (or 2502289 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 43.

It can be divided in two parts, 19164 and 546340, that added together give a square (565504 = 752²).

The spelling of 19164546340 in words is "nineteen billion, one hundred sixty-four million, five hundred forty-six thousand, three hundred forty".