1071978071 has 8 divisors (see below), whose sum is σ = 1092006000. Its totient is φ = 1052029440.

The previous prime is 1071978041. The next prime is 1071978073. The reversal of 1071978071 is 1708791701.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1071978071 - 2¹⁰ = 1071977047 is a prime.

It is a super-2 number, since 2×1071978071² = 2298273969409762082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071978073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7820 + ... + 46958.

It is an arithmetic number, because the mean of its divisors is an integer number (136500750).

Almost surely, 2^1071978071 is an apocalyptic number.

1071978071 is a deficient number, since it is larger than the sum of its proper divisors (20027929).

1071978071 is an equidigital number, since it uses as much as digits as its factorization.

1071978071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39649.

The product of its (nonzero) digits is 24696, while the sum is 41.

The square root of 1071978071 is about 32741.0762040590. The cubic root of 1071978071 is about 1023.4390107443.

The spelling of 1071978071 in words is "one billion, seventy-one million, nine hundred seventy-eight thousand, seventy-one".