1071985073 has 4 divisors (see below), whose sum is σ = 1128405360. Its totient is φ = 1015564788.

The previous prime is 1071985063. The next prime is 1071985091. The reversal of 1071985073 is 3705891701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1071985073 - 2⁸ = 1071984817 is a prime.

It is a super-2 number, since 2×1071985073² = 2298303993469630658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1071985073.

It is not an unprimeable number, because it can be changed into a prime (1071985003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28210115 + ... + 28210152.

It is an arithmetic number, because the mean of its divisors is an integer number (282101340).

Almost surely, 2^1071985073 is an apocalyptic number.

It is an amenable number.

1071985073 is a deficient number, since it is larger than the sum of its proper divisors (56420287).

1071985073 is an equidigital number, since it uses as much as digits as its factorization.

1071985073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56420286.

The product of its (nonzero) digits is 52920, while the sum is 41.

The square root of 1071985073 is about 32741.1831337843. The cubic root of 1071985073 is about 1023.4412390562.

The spelling of 1071985073 in words is "one billion, seventy-one million, nine hundred eighty-five thousand, seventy-three".