1931265 has 24 divisors (see below), whose sum is σ = 3826368. Its totient is φ = 882720.

The previous prime is 1931261. The next prime is 1931273. The reversal of 1931265 is 5621391.

It is not a de Polignac number, because 1931265 - 2² = 1931261 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1931261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2751 + ... + 3380.

It is an arithmetic number, because the mean of its divisors is an integer number (159432).

It is a Proth number, since it is equal to 943 ⋅ 2¹¹ + 1 and 943 < 2¹¹.

2^1931265 is an apocalyptic number.

1931265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1931265 is a deficient number, since it is larger than the sum of its proper divisors (1895103).

1931265 is a wasteful number, since it uses less digits than its factorization.

1931265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6149 (or 6146 counting only the distinct ones).

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

The square root of 1931265 is about 1389.6996078290. The cubic root of 1931265 is about 124.5319026000.

It can be divided in two parts, 193126 and 5, that added together give a triangular number (193131 = T₆₂₁).

The spelling of 1931265 in words is "one million, nine hundred thirty-one thousand, two hundred sixty-five".