1944226545 has 8 divisors (see below), whose sum is σ = 3110762496. Its totient is φ = 1036920816.

The previous prime is 1944226541. The next prime is 1944226549. The reversal of 1944226545 is 5456224491.

It is an interprime number because it is at equal distance from previous prime (1944226541) and next prime (1944226549).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1944226545 - 2² = 1944226541 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1944226497 and 1944226506.

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 in 7 ways as a sum of consecutive naturals, for example, 64807537 + ... + 64807566.

It is an arithmetic number, because the mean of its divisors is an integer number (388845312).

Almost surely, 2^1944226545 is an apocalyptic number.

1944226545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1944226545 is a deficient number, since it is larger than the sum of its proper divisors (1166535951).

1944226545 is a wasteful number, since it uses less digits than its factorization.

1944226545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129615111.

The product of its digits is 345600, while the sum is 42.

The square root of 1944226545 is about 44093.3843677257. The cubic root of 1944226545 is about 1248.0987726671.

The spelling of 1944226545 in words is "one billion, nine hundred forty-four million, two hundred twenty-six thousand, five hundred forty-five".