19148840 has 32 divisors (see below), whose sum is σ = 43217280. Its totient is φ = 7636032.

The previous prime is 19148839. The next prime is 19148861. The reversal of 19148840 is 4884191.

It is a self number, because there is not a number n which added to its sum of digits gives 19148840.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18989 + ... + 19971.

It is an arithmetic number, because the mean of its divisors is an integer number (1350540).

Almost surely, 2^19148840 is an apocalyptic number.

19148840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19148840 is an abundant number, since it is smaller than the sum of its proper divisors (24068440).

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

19148840 is a wasteful number, since it uses less digits than its factorization.

19148840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481 (or 1477 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 19148840 is about 4375.9387564270. The cubic root of 19148840 is about 267.5351338253.

The spelling of 19148840 in words is "nineteen million, one hundred forty-eight thousand, eight hundred forty".