1961465 has 16 divisors (see below), whose sum is σ = 2704320. Its totient is φ = 1350720.

The previous prime is 1961461. The next prime is 1961467. The reversal of 1961465 is 5641691.

It is not a de Polignac number, because 1961465 - 2² = 1961461 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1961461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107 + ... + 1983.

It is an arithmetic number, because the mean of its divisors is an integer number (169020).

2^1961465 is an apocalyptic number.

It is an amenable number.

1961465 is a deficient number, since it is larger than the sum of its proper divisors (742855).

1961465 is a wasteful number, since it uses less digits than its factorization.

1961465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912.

The product of its digits is 6480, while the sum is 32.

The square root of 1961465 is about 1400.5231165532. The cubic root of 1961465 is about 125.1776673548.

It can be divided in two parts, 196 and 1465, that added together give a palindrome (1661).

The spelling of 1961465 in words is "one million, nine hundred sixty-one thousand, four hundred sixty-five".