1011642611 has 4 divisors (see below), whose sum is σ = 1156162992. Its totient is φ = 867122232.

The previous prime is 1011642607. The next prime is 1011642629. The reversal of 1011642611 is 1162461101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1011642611 - 2² = 1011642607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011642311) 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, 72260180 + ... + 72260193.

It is an arithmetic number, because the mean of its divisors is an integer number (289040748).

Almost surely, 2^1011642611 is an apocalyptic number.

1011642611 is a deficient number, since it is larger than the sum of its proper divisors (144520381).

1011642611 is an equidigital number, since it uses as much as digits as its factorization.

1011642611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144520380.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1011642611 is about 31806.3297316745. The cubic root of 1011642611 is about 1003.8659058464.

The spelling of 1011642611 in words is "one billion, eleven million, six hundred forty-two thousand, six hundred eleven".