1944158656 has 56 divisors (see below), whose sum is σ = 4306604544. Its totient is φ = 863143680.

The previous prime is 1944158653. The next prime is 1944158659. The reversal of 1944158656 is 6568514491.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1944158653) and next prime (1944158659).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944158653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1840 + ... + 62383.

Almost surely, 2^1944158656 is an apocalyptic number.

1944158656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1944158656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2153302272).

1944158656 is an abundant number, since it is smaller than the sum of its proper divisors (2362445888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1944158656 is a wasteful number, since it uses less digits than its factorization.

1944158656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64289 (or 64279 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 49.

The square root of 1944158656 is about 44092.6145289662. The cubic root of 1944158656 is about 1248.0842453539.

The spelling of 1944158656 in words is "one billion, nine hundred forty-four million, one hundred fifty-eight thousand, six hundred fifty-six".