19148445 has 12 divisors (see below), whose sum is σ = 33190716. Its totient is φ = 10212480.

The previous prime is 19148431. The next prime is 19148471. The reversal of 19148445 is 54484191.

It can be written as a sum of positive squares in 2 ways, for example, as 11431161 + 7717284 = 3381^2 + 2778^2 .

It is not a de Polignac number, because 19148445 - 2⁵ = 19148413 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212716 + ... + 212805.

It is an arithmetic number, because the mean of its divisors is an integer number (2765893).

Almost surely, 2^19148445 is an apocalyptic number.

19148445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19148445 is a deficient number, since it is larger than the sum of its proper divisors (14042271).

19148445 is a wasteful number, since it uses less digits than its factorization.

19148445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425532 (or 425529 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 19148445 is about 4375.8936230215. The cubic root of 19148445 is about 267.5332942517.

The spelling of 19148445 in words is "nineteen million, one hundred forty-eight thousand, four hundred forty-five".