1944365556 has 48 divisors (see below), whose sum is σ = 5243253120. Its totient is φ = 549288960.

The previous prime is 1944365461. The next prime is 1944365557. The reversal of 1944365556 is 6555634491.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944365557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122565 + ... + 137516.

It is an arithmetic number, because the mean of its divisors is an integer number (109234440).

Almost surely, 2^1944365556 is an apocalyptic number.

It is an amenable number.

1944365556 is an abundant number, since it is smaller than the sum of its proper divisors (3298887564).

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

1944365556 is a wasteful number, since it uses less digits than its factorization.

1944365556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260184 (or 260182 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 48.

The square root of 1944365556 is about 44094.9606644569. The cubic root of 1944365556 is about 1248.1285180559.

The spelling of 1944365556 in words is "one billion, nine hundred forty-four million, three hundred sixty-five thousand, five hundred fifty-six".