1961445 has 16 divisors (see below), whose sum is σ = 3212352. Its totient is φ = 1021440.

The previous prime is 1961441. The next prime is 1961447. The reversal of 1961445 is 5441691.

It is a happy number.

It is not a de Polignac number, because 1961445 - 2² = 1961441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961441) 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, 876 + ... + 2165.

It is an arithmetic number, because the mean of its divisors is an integer number (200772).

2^1961445 is an apocalyptic number.

1961445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1961445 is a deficient number, since it is larger than the sum of its proper divisors (1250907).

1961445 is a wasteful number, since it uses less digits than its factorization.

1961445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3092.

The product of its digits is 4320, while the sum is 30.

The square root of 1961445 is about 1400.5159763459. The cubic root of 1961445 is about 125.1772418970.

The spelling of 1961445 in words is "one million, nine hundred sixty-one thousand, four hundred forty-five".