1071045985 has 16 divisors (see below), whose sum is σ = 1364688000. Its totient is φ = 804165376.

The previous prime is 1071045977. The next prime is 1071046003. The reversal of 1071045985 is 5895401701.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1071045985 - 2³ = 1071045977 is a prime.

It is a super-2 number, since 2×1071045985² = 2294279003969240450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12966 + ... + 48064.

It is an arithmetic number, because the mean of its divisors is an integer number (85293000).

Almost surely, 2^1071045985 is an apocalyptic number.

It is an amenable number.

1071045985 is a deficient number, since it is larger than the sum of its proper divisors (293642015).

1071045985 is a wasteful number, since it uses less digits than its factorization.

1071045985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35480.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 1071045985 is about 32726.8389093722. The cubic root of 1071045985 is about 1023.1422976506.

The spelling of 1071045985 in words is "one billion, seventy-one million, forty-five thousand, nine hundred eighty-five".