1942999772 has 72 divisors (see below), whose sum is σ = 4049152128. Its totient is φ = 799100640.

The previous prime is 1942999753. The next prime is 1942999777. The reversal of 1942999772 is 2779992491.

It is a super-2 number, since 2×1942999772² = 7550496227984103968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1942999777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4385783 + ... + 4386225.

It is an arithmetic number, because the mean of its divisors is an integer number (56238224).

Almost surely, 2^1942999772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1942999772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2024576064).

1942999772 is an abundant number, since it is smaller than the sum of its proper divisors (2106152356).

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

1942999772 is a wasteful number, since it uses less digits than its factorization.

1942999772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 646 counting only the distinct ones).

The product of its digits is 5143824, while the sum is 59.

The square root of 1942999772 is about 44079.4710948305. The cubic root of 1942999772 is about 1247.8362079243.

The spelling of 1942999772 in words is "one billion, nine hundred forty-two million, nine hundred ninety-nine thousand, seven hundred seventy-two".