19490453 has 12 divisors (see below), whose sum is σ = 20936160. Its totient is φ = 18109872.

The previous prime is 19490437. The next prime is 19490467. The reversal of 19490453 is 35409491.

It is not a de Polignac number, because 19490453 - 2⁴ = 19490437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19492453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31178 + ... + 31796.

It is an arithmetic number, because the mean of its divisors is an integer number (1744680).

Almost surely, 2^19490453 is an apocalyptic number.

It is an amenable number.

19490453 is a deficient number, since it is larger than the sum of its proper divisors (1445707).

19490453 is an equidigital number, since it uses as much as digits as its factorization.

19490453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 679 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 19490453 is about 4414.7993159372. The cubic root of 19490453 is about 269.1166973391.

The spelling of 19490453 in words is "nineteen million, four hundred ninety thousand, four hundred fifty-three".