1010011985 has 16 divisors (see below), whose sum is σ = 1225659600. Its totient is φ = 798944256.

The previous prime is 1010011969. The next prime is 1010011987. The reversal of 1010011985 is 5891100101.

It can be written as a sum of positive squares in 8 ways, for example, as 2076481 + 1007935504 = 1441^2 + 31748^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010011985 - 2⁴ = 1010011969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1010011987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308477 + ... + 311733.

It is an arithmetic number, because the mean of its divisors is an integer number (76603725).

Almost surely, 2^1010011985 is an apocalyptic number.

It is an amenable number.

1010011985 is a deficient number, since it is larger than the sum of its proper divisors (215647615).

1010011985 is a wasteful number, since it uses less digits than its factorization.

1010011985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940.

The product of its (nonzero) digits is 360, while the sum is 26.

The square root of 1010011985 is about 31780.6857226209. The cubic root of 1010011985 is about 1003.3262521130.

The spelling of 1010011985 in words is "one billion, ten million, eleven thousand, nine hundred eighty-five".