1135205061 has 4 divisors (see below), whose sum is σ = 1513606752. Its totient is φ = 756803372.

The previous prime is 1135205021. The next prime is 1135205101. The reversal of 1135205061 is 1605025311.

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 an interprime number because it is at equal distance from previous prime (1135205021) and next prime (1135205101).

It is a cyclic number.

It is not a de Polignac number, because 1135205061 - 2¹⁹ = 1134680773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135205011) 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, 189200841 + ... + 189200846.

It is an arithmetic number, because the mean of its divisors is an integer number (378401688).

Almost surely, 2^1135205061 is an apocalyptic number.

It is an amenable number.

1135205061 is a deficient number, since it is larger than the sum of its proper divisors (378401691).

1135205061 is an equidigital number, since it uses as much as digits as its factorization.

1135205061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378401690.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1135205061 is about 33692.8042911242. The cubic root of 1135205061 is about 1043.1772475443.

The spelling of 1135205061 in words is "one billion, one hundred thirty-five million, two hundred five thousand, sixty-one".