19461930 has 16 divisors (see below), whose sum is σ = 46708704. Its totient is φ = 5189840.

The previous prime is 19461919. The next prime is 19461931. The reversal of 19461930 is 3916491.

It is a junction number, because it is equal to n+sod(n) for n = 19461891 and 19461900.

It is not an unprimeable number, because it can be changed into a prime (19461931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324336 + ... + 324395.

It is an arithmetic number, because the mean of its divisors is an integer number (2919294).

Almost surely, 2^19461930 is an apocalyptic number.

19461930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19461930 is an abundant number, since it is smaller than the sum of its proper divisors (27246774).

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

19461930 is a wasteful number, since it uses less digits than its factorization.

19461930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648741.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 19461930 is about 4411.5677485447. The cubic root of 19461930 is about 268.9853550343.

The spelling of 19461930 in words is "nineteen million, four hundred sixty-one thousand, nine hundred thirty".