1913265 has 48 divisors (see below), whose sum is σ = 3656016. Its totient is φ = 921600.

The previous prime is 1913251. The next prime is 1913269. The reversal of 1913265 is 5623191.

It can be written as a sum of positive squares in 8 ways, for example, as 451584 + 1461681 = 672^2 + 1209^2 .

It is not a de Polignac number, because 1913265 - 2⁶ = 1913201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1913269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31335 + ... + 31395.

It is an arithmetic number, because the mean of its divisors is an integer number (76167).

2^1913265 is an apocalyptic number.

1913265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1913265 is a deficient number, since it is larger than the sum of its proper divisors (1742751).

1913265 is a wasteful number, since it uses less digits than its factorization.

1913265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 127 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 1913265 is about 1383.2082272745. The cubic root of 1913265 is about 124.1438021249.

The spelling of 1913265 in words is "one million, nine hundred thirteen thousand, two hundred sixty-five".