1944717940 has 48 divisors (see below), whose sum is σ = 4460964480. Its totient is φ = 706250880.

The previous prime is 1944717937. The next prime is 1944717949. The reversal of 1944717940 is 497174491.

It is a happy number.

It is a Smith number, since the sum of its digits (46) 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 (1944717949) 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, 177049 + ... + 187711.

It is an arithmetic number, because the mean of its divisors is an integer number (92936760).

Almost surely, 2^1944717940 is an apocalyptic number.

1944717940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1944717940 is an abundant number, since it is smaller than the sum of its proper divisors (2516246540).

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

1944717940 is a wasteful number, since it uses less digits than its factorization.

1944717940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11512 (or 11510 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 1944717940 is about 44098.9562234754. The cubic root of 1944717940 is about 1248.2039143638.

The spelling of 1944717940 in words is "one billion, nine hundred forty-four million, seven hundred seventeen thousand, nine hundred forty".