1942993 has 6 divisors (see below), whose sum is σ = 2104134. Its totient is φ = 1793376.
The previous prime is 1942979. The next prime is 1943021. The reversal of 1942993 is 3992491.
It can be written as a sum of positive squares in 3 ways, for example, as 5329 + 1937664 = 73^2 + 1392^2 .
It is not a de Polignac number, because 1942993 - 25 = 1942961 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (1942943) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5580 + ... + 5917.
It is an arithmetic number, because the mean of its divisors is an integer number (350689).
21942993 is an apocalyptic number.
1942993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.
It is an amenable number.
1942993 is a deficient number, since it is larger than the sum of its proper divisors (161141).
1942993 is a wasteful number, since it uses less digits than its factorization.
1942993 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11523 (or 11510 counting only the distinct ones).
The product of its digits is 17496, while the sum is 37.
The square root of 1942993 is about 1393.9128380211. The cubic root of 1942993 is about 124.7834758215.
The spelling of 1942993 in words is "one million, nine hundred forty-two thousand, nine hundred ninety-three".
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