1040185011 has 4 divisors (see below), whose sum is σ = 1386913352. Its totient is φ = 693456672.

The previous prime is 1040185009. The next prime is 1040185031. The reversal of 1040185011 is 1105810401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1105810401 = 3 ⋅368603467.

It is not a de Polignac number, because 1040185011 - 2¹ = 1040185009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040185031) 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, 173364166 + ... + 173364171.

It is an arithmetic number, because the mean of its divisors is an integer number (346728338).

Almost surely, 2^1040185011 is an apocalyptic number.

1040185011 is a deficient number, since it is larger than the sum of its proper divisors (346728341).

1040185011 is an equidigital number, since it uses as much as digits as its factorization.

1040185011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346728340.

The product of its (nonzero) digits is 160, while the sum is 21.

The square root of 1040185011 is about 32251.8993394188. The cubic root of 1040185011 is about 1013.2194789870.

Adding to 1040185011 its reverse (1105810401), we get a palindrome (2145995412).

The spelling of 1040185011 in words is "one billion, forty million, one hundred eighty-five thousand, eleven".