1071399693 has 32 divisors (see below), whose sum is σ = 1818835200. Its totient is φ = 545642496.

The previous prime is 1071399691. The next prime is 1071399701. The reversal of 1071399693 is 3969931701.

It is not a de Polignac number, because 1071399693 - 2¹ = 1071399691 is a prime.

It is a super-2 number, since 2×1071399693² = 2295794604320988498, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071399691) 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 31 ways as a sum of consecutive naturals, for example, 59748 + ... + 75581.

It is an arithmetic number, because the mean of its divisors is an integer number (56838600).

Almost surely, 2^1071399693 is an apocalyptic number.

1071399693 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1071399693 is a deficient number, since it is larger than the sum of its proper divisors (747435507).

1071399693 is a wasteful number, since it uses less digits than its factorization.

1071399693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135381.

The product of its (nonzero) digits is 275562, while the sum is 48.

The square root of 1071399693 is about 32732.2424071434. The cubic root of 1071399693 is about 1023.2549145972.

The spelling of 1071399693 in words is "one billion, seventy-one million, three hundred ninety-nine thousand, six hundred ninety-three".