1061489771 has 8 divisors (see below), whose sum is σ = 1068994320. Its totient is φ = 1054006272.

The previous prime is 1061489743. The next prime is 1061489773. The reversal of 1061489771 is 1779841601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1061489771 is a prime.

It is a super-2 number, since 2×1061489771² = 2253521067875264882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1061489773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103775 + ... + 113543.

It is an arithmetic number, because the mean of its divisors is an integer number (133624290).

Almost surely, 2^1061489771 is an apocalyptic number.

1061489771 is a deficient number, since it is larger than the sum of its proper divisors (7504549).

1061489771 is an equidigital number, since it uses as much as digits as its factorization.

1061489771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10525.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 1061489771 is about 32580.5121353241. The cubic root of 1061489771 is about 1020.0902685074.

The spelling of 1061489771 in words is "one billion, sixty-one million, four hundred eighty-nine thousand, seven hundred seventy-one".