1071942993 has 18 divisors (see below), whose sum is σ = 1701920402. Its totient is φ = 649661760.

The previous prime is 1071942961. The next prime is 1071943003. The reversal of 1071942993 is 3992491701.

It can be written as a sum of positive squares in only one way, i.e., 954068544 + 117874449 = 30888^2 + 10857^2 .

It is not a de Polignac number, because 1071942993 - 2⁵ = 1071942961 is a prime.

It is a super-2 number, since 2×1071942993² = 2298123560483596098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1071942493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 491080 + ... + 493257.

Almost surely, 2^1071942993 is an apocalyptic number.

It is an amenable number.

1071942993 is a deficient number, since it is larger than the sum of its proper divisors (629977409).

1071942993 is a wasteful number, since it uses less digits than its factorization.

1071942993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984365 (or 984351 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 1071942993 is about 32740.5405117264. The cubic root of 1071942993 is about 1023.4278473987.

The spelling of 1071942993 in words is "one billion, seventy-one million, nine hundred forty-two thousand, nine hundred ninety-three".