1944226546 has 4 divisors (see below), whose sum is σ = 2916339822. Its totient is φ = 972113272.

The previous prime is 1944226541. The next prime is 1944226549. The reversal of 1944226546 is 6456224491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6456224491 = 19 ⋅339801289.

It can be written as a sum of positive squares in only one way, i.e., 1744315225 + 199911321 = 41765^2 + 14139^2 .

It is not an unprimeable number, because it can be changed into a prime (1944226541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486056635 + ... + 486056638.

Almost surely, 2^1944226546 is an apocalyptic number.

1944226546 is a deficient number, since it is larger than the sum of its proper divisors (972113276).

1944226546 is an equidigital number, since it uses as much as digits as its factorization.

1944226546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972113275.

The product of its digits is 414720, while the sum is 43.

The square root of 1944226546 is about 44093.3843790653. The cubic root of 1944226546 is about 1248.0987728811.

The spelling of 1944226546 in words is "one billion, nine hundred forty-four million, two hundred twenty-six thousand, five hundred forty-six".