19483649 has 4 divisors (see below), whose sum is σ = 20629764. Its totient is φ = 18337536.

The previous prime is 19483643. The next prime is 19483657. The reversal of 19483649 is 94638491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94638491 = 23 ⋅4114717.

It can be written as a sum of positive squares in 2 ways, for example, as 5793649 + 13690000 = 2407^2 + 3700^2 .

It is a cyclic number.

It is not a de Polignac number, because 19483649 - 2¹² = 19479553 is a prime.

It is a super-2 number, since 2×19483649² = 759225156710402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19483643) 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, 573032 + ... + 573065.

It is an arithmetic number, because the mean of its divisors is an integer number (5157441).

Almost surely, 2^19483649 is an apocalyptic number.

It is an amenable number.

19483649 is a deficient number, since it is larger than the sum of its proper divisors (1146115).

19483649 is a wasteful number, since it uses less digits than its factorization.

19483649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146114.

The product of its digits is 186624, while the sum is 44.

The square root of 19483649 is about 4414.0286587198. The cubic root of 19483649 is about 269.0853780205.

The spelling of 19483649 in words is "nineteen million, four hundred eighty-three thousand, six hundred forty-nine".