1902265 has 4 divisors (see below), whose sum is σ = 2282724. Its totient is φ = 1521808.

The previous prime is 1902239. The next prime is 1902269. The reversal of 1902265 is 5622091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5622091 = 307 ⋅18313.

It can be written as a sum of positive squares in 2 ways, for example, as 876096 + 1026169 = 936^2 + 1013^2 .

It is a cyclic number.

It is not a de Polignac number, because 1902265 - 2¹⁷ = 1771193 is a prime.

It is a super-2 number, since 2×1902265² = 7237224260450, which contains 22 as substring.

It is a Duffinian number.

1902265 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1902269) 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 3 ways as a sum of consecutive naturals, for example, 190222 + ... + 190231.

It is an arithmetic number, because the mean of its divisors is an integer number (570681).

2^1902265 is an apocalyptic number.

It is an amenable number.

1902265 is a deficient number, since it is larger than the sum of its proper divisors (380459).

1902265 is an equidigital number, since it uses as much as digits as its factorization.

1902265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380458.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1902265 is about 1379.2262323491. The cubic root of 1902265 is about 123.9054299746.

The spelling of 1902265 in words is "one million, nine hundred two thousand, two hundred sixty-five".