1422273961 has 4 divisors (see below), whose sum is σ = 1422634500. Its totient is φ = 1421913424.

The previous prime is 1422273929. The next prime is 1422273967. The reversal of 1422273961 is 1693722241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1693722241 = 223 ⋅7595167.

It can be written as a sum of positive squares in 2 ways, for example, as 1065630736 + 356643225 = 32644^2 + 18885^2 .

It is a cyclic number.

It is not a de Polignac number, because 1422273961 - 2⁵ = 1422273929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1422273961.

It is not an unprimeable number, because it can be changed into a prime (1422273967) 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, 174286 + ... + 182263.

It is an arithmetic number, because the mean of its divisors is an integer number (355658625).

Almost surely, 2^1422273961 is an apocalyptic number.

It is an amenable number.

1422273961 is a deficient number, since it is larger than the sum of its proper divisors (360539).

1422273961 is an equidigital number, since it uses as much as digits as its factorization.

1422273961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360538.

The product of its digits is 36288, while the sum is 37.

The square root of 1422273961 is about 37713.0476228056. The cubic root of 1422273961 is about 1124.5905238334.

The spelling of 1422273961 in words is "one billion, four hundred twenty-two million, two hundred seventy-three thousand, nine hundred sixty-one".