19490253 has 8 divisors (see below), whose sum is σ = 26008416. Its totient is φ = 12982800.

The previous prime is 19490239. The next prime is 19490267. The reversal of 19490253 is 35209491.

It is an interprime number because it is at equal distance from previous prime (19490239) and next prime (19490267).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19490253 - 2⁵ = 19490221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19498253) 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, 3838 + ... + 7328.

It is an arithmetic number, because the mean of its divisors is an integer number (3251052).

Almost surely, 2^19490253 is an apocalyptic number.

It is an amenable number.

19490253 is a deficient number, since it is larger than the sum of its proper divisors (6518163).

19490253 is a wasteful number, since it uses less digits than its factorization.

19490253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5355.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 19490253 is about 4414.7766647929. The cubic root of 19490253 is about 269.1157768282.

The spelling of 19490253 in words is "nineteen million, four hundred ninety thousand, two hundred fifty-three".