19490492 has 24 divisors (see below), whose sum is σ = 39177600. Its totient is φ = 8310960.

The previous prime is 19490467. The next prime is 19490503. The reversal of 19490492 is 29409491.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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, 4259 + ... + 7557.

It is an arithmetic number, because the mean of its divisors is an integer number (1632400).

Almost surely, 2^19490492 is an apocalyptic number.

It is an amenable number.

19490492 is an abundant number, since it is smaller than the sum of its proper divisors (19687108).

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

19490492 is a wasteful number, since it uses less digits than its factorization.

19490492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521 (or 3519 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 19490492 is about 4414.8037328969. The cubic root of 19490492 is about 269.1168768380.

The spelling of 19490492 in words is "nineteen million, four hundred ninety thousand, four hundred ninety-two".