1150611641 has 4 divisors (see below), whose sum is σ = 1150684032. Its totient is φ = 1150539252.

The previous prime is 1150611617. The next prime is 1150611643. The reversal of 1150611641 is 1461160511.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1150611641 - 2³⁰ = 76869817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1150611641.

It is not an unprimeable number, because it can be changed into a prime (1150611643) 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, 845 + ... + 47978.

It is an arithmetic number, because the mean of its divisors is an integer number (287671008).

Almost surely, 2^1150611641 is an apocalyptic number.

It is an amenable number.

1150611641 is a deficient number, since it is larger than the sum of its proper divisors (72391).

1150611641 is an equidigital number, since it uses as much as digits as its factorization.

1150611641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72390.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 1150611641 is about 33920.6668713927. Note that the first 3 decimals coincide. The cubic root of 1150611641 is about 1047.8752622476.

The spelling of 1150611641 in words is "one billion, one hundred fifty million, six hundred eleven thousand, six hundred forty-one".