1061390864 has 20 divisors (see below), whose sum is σ = 2056949820. Its totient is φ = 530565120.

The previous prime is 1061390849. The next prime is 1061390881. The reversal of 1061390864 is 4680931601.

It can be written as a sum of positive squares in 2 ways, for example, as 196560400 + 864830464 = 14020^2 + 29408^2 .

It is a super-2 number, since 2×1061390864² = 2253101132365332992, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125192 + ... + 133400.

It is an arithmetic number, because the mean of its divisors is an integer number (102847491).

Almost surely, 2^1061390864 is an apocalyptic number.

It is an amenable number.

1061390864 is a deficient number, since it is larger than the sum of its proper divisors (995558956).

1061390864 is an equidigital number, since it uses as much as digits as its factorization.

1061390864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16298 (or 16292 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1061390864 is about 32578.9942140638. The cubic root of 1061390864 is about 1020.0585843578.

The spelling of 1061390864 in words is "one billion, sixty-one million, three hundred ninety thousand, eight hundred sixty-four".