19481265 has 48 divisors (see below), whose sum is σ = 35283456. Its totient is φ = 9936000.

The previous prime is 19481239. The next prime is 19481281. The reversal of 19481265 is 56218491.

It is not a de Polignac number, because 19481265 - 2¹⁵ = 19448497 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

Its product of digits (17280) is a multiple of the sum of its prime factors (270).

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128940 + ... + 129090.

It is an arithmetic number, because the mean of its divisors is an integer number (735072).

Almost surely, 2^19481265 is an apocalyptic number.

19481265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19481265 is a deficient number, since it is larger than the sum of its proper divisors (15802191).

19481265 is a wasteful number, since it uses less digits than its factorization.

19481265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 267 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 19481265 is about 4413.7586023705. The cubic root of 19481265 is about 269.0744025660.

The spelling of 19481265 in words is "nineteen million, four hundred eighty-one thousand, two hundred sixty-five".