1944866742 has 192 divisors, whose sum is σ = 5305487040. Its totient is φ = 469131264.

The previous prime is 1944866731. The next prime is 1944866743. The reversal of 1944866742 is 2476684491.

It is a happy number.

It is a super-3 number, since 3×1944866742³ (a number of 29 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944866743) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2403634 + ... + 2404442.

It is an arithmetic number, because the mean of its divisors is an integer number (27632745).

Almost surely, 2^1944866742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1944866742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2652743520).

1944866742 is an abundant number, since it is smaller than the sum of its proper divisors (3360620298).

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

1944866742 is a wasteful number, since it uses less digits than its factorization.

1944866742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 888 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The square root of 1944866742 is about 44100.6433286409. The cubic root of 1944866742 is about 1248.2357494007.

The spelling of 1944866742 in words is "one billion, nine hundred forty-four million, eight hundred sixty-six thousand, seven hundred forty-two".