1150498561 has 9 divisors (see below), whose sum is σ = 1165026499. Its totient is φ = 1136150824.

The previous prime is 1150498549. The next prime is 1150498619. The reversal of 1150498561 is 1658940511.

The square root of 1150498561 is 33919.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 64400625 + 1086097936 = 8025^2 + 32956^2 .

It is not a de Polignac number, because 1150498561 - 2⁵ = 1150498529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1150498501) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3629175 + ... + 3629491.

Almost surely, 2^1150498561 is an apocalyptic number.

1150498561 is the 33919-th square number.

1150498561 is the 16960-th centered octagonal number.

It is an amenable number.

1150498561 is a deficient number, since it is larger than the sum of its proper divisors (14527938).

1150498561 is an frugal number, since it uses more digits than its factorization.

1150498561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 40.

The cubic root of 1150498561 is about 1047.8409333706.

The spelling of 1150498561 in words is "one billion, one hundred fifty million, four hundred ninety-eight thousand, five hundred sixty-one".