19461045920 has 48 divisors (see below), whose sum is σ = 45994835880. Its totient is φ = 7781351424.

The previous prime is 19461045917. The next prime is 19461045931. The reversal of 19461045920 is 2954016491.

It can be written as a sum of positive squares in 4 ways, for example, as 15808535824 + 3652510096 = 125732^2 + 60436^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407624 + ... + 452856.

Almost surely, 2^19461045920 is an apocalyptic number.

19461045920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19461045920 is an abundant number, since it is smaller than the sum of its proper divisors (26533789960).

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

19461045920 is a wasteful number, since it uses less digits than its factorization.

19461045920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47937 (or 47929 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 19461045920 in words is "nineteen billion, four hundred sixty-one million, forty-five thousand, nine hundred twenty".