1061650549 has 4 divisors (see below), whose sum is σ = 1066055980. Its totient is φ = 1057245120.

The previous prime is 1061650529. The next prime is 1061650567. The reversal of 1061650549 is 9450561601.

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

It can be written as a sum of positive squares in 2 ways, for example, as 431891524 + 629759025 = 20782^2 + 25095^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061650549 - 2²⁹ = 524779637 is a prime.

It is a super-2 number, since 2×1061650549² = 2254203776384002802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061650519) 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, 2202354 + ... + 2202835.

It is an arithmetic number, because the mean of its divisors is an integer number (266513995).

Almost surely, 2^1061650549 is an apocalyptic number.

It is an amenable number.

1061650549 is a deficient number, since it is larger than the sum of its proper divisors (4405431).

1061650549 is an equidigital number, since it uses as much as digits as its factorization.

1061650549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4405430.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 1061650549 is about 32582.9794371233. The cubic root of 1061650549 is about 1020.1417683892.

The spelling of 1061650549 in words is "one billion, sixty-one million, six hundred fifty thousand, five hundred forty-nine".