10381965 has 16 divisors (see below), whose sum is σ = 18121536. Its totient is φ = 5033600.

The previous prime is 10381957. The next prime is 10381991. The reversal of 10381965 is 56918301.

It is not a de Polignac number, because 10381965 - 2³ = 10381957 is a prime.

It is a super-2 number, since 2×10381965² = 215570394522450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31296 + ... + 31625.

It is an arithmetic number, because the mean of its divisors is an integer number (1132596).

Almost surely, 2^10381965 is an apocalyptic number.

10381965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10381965 is a deficient number, since it is larger than the sum of its proper divisors (7739571).

10381965 is a wasteful number, since it uses less digits than its factorization.

10381965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62940.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 10381965 is about 3222.1056779690. The cubic root of 10381965 is about 218.1523287953.

It can be divided in two parts, 1038 and 1965, that added together give a palindrome (3003).

The spelling of 10381965 in words is "ten million, three hundred eighty-one thousand, nine hundred sixty-five".