19493049 has 4 divisors (see below), whose sum is σ = 25990736. Its totient is φ = 12995364.

The previous prime is 19493041. The next prime is 19493053. The reversal of 19493049 is 94039491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 19493049 - 2³ = 19493041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19492998 and 19493016.

It is not an unprimeable number, because it can be changed into a prime (19493041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3248839 + ... + 3248844.

It is an arithmetic number, because the mean of its divisors is an integer number (6497684).

Almost surely, 2^19493049 is an apocalyptic number.

It is an amenable number.

19493049 is a deficient number, since it is larger than the sum of its proper divisors (6497687).

19493049 is an equidigital number, since it uses as much as digits as its factorization.

19493049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6497686.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 19493049 is about 4415.0933172471. The cubic root of 19493049 is about 269.1286449994.

The spelling of 19493049 in words is "nineteen million, four hundred ninety-three thousand, forty-nine".