1061881364 has 6 divisors (see below), whose sum is σ = 1858292394. Its totient is φ = 530940680.

The previous prime is 1061881361. The next prime is 1061881369. The reversal of 1061881364 is 4631881601.

It can be written as a sum of positive squares in only one way, i.e., 548496400 + 513384964 = 23420^2 + 22658^2 .

It is a super-2 number, since 2×1061881364² = 2255184062421000992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061881361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132735167 + ... + 132735174.

It is an arithmetic number, because the mean of its divisors is an integer number (309715399).

Almost surely, 2^1061881364 is an apocalyptic number.

It is an amenable number.

1061881364 is a deficient number, since it is larger than the sum of its proper divisors (796411030).

1061881364 is a wasteful number, since it uses less digits than its factorization.

1061881364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265470345 (or 265470343 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 1061881364 is about 32586.5212012574. The cubic root of 1061881364 is about 1020.2156932039.

The spelling of 1061881364 in words is "one billion, sixty-one million, eight hundred eighty-one thousand, three hundred sixty-four".