1961423 has 4 divisors (see below), whose sum is σ = 1968120. Its totient is φ = 1954728.

The previous prime is 1961419. The next prime is 1961431. The reversal of 1961423 is 3241691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3241691 = 241 ⋅13451.

It is a cyclic number.

It is not a de Polignac number, because 1961423 - 2² = 1961419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1961392 and 1961401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2888 + ... + 3501.

It is an arithmetic number, because the mean of its divisors is an integer number (492030).

2^1961423 is an apocalyptic number.

1961423 is a deficient number, since it is larger than the sum of its proper divisors (6697).

1961423 is an equidigital number, since it uses as much as digits as its factorization.

1961423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6696.

The product of its digits is 1296, while the sum is 26.

The square root of 1961423 is about 1400.5081220757. The cubic root of 1961423 is about 125.1767738901.

The spelling of 1961423 in words is "one million, nine hundred sixty-one thousand, four hundred twenty-three".