1061819664 has 40 divisors (see below), whose sum is σ = 2776093152. Its totient is φ = 349674240.

The previous prime is 1061819651. The next prime is 1061819669. The reversal of 1061819664 is 4669181601.

It is a super-2 number, since 2×1061819664² = 2254921997714145792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061819669) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 129277 + ... + 137244.

Almost surely, 2^1061819664 is an apocalyptic number.

It is an amenable number.

1061819664 is an abundant number, since it is smaller than the sum of its proper divisors (1714273488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1061819664 is a wasteful number, since it uses less digits than its factorization.

1061819664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266615 (or 266609 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 1061819664 is about 32585.5744770596. The cubic root of 1061819664 is about 1020.1959331410.

The spelling of 1061819664 in words is "one billion, sixty-one million, eight hundred nineteen thousand, six hundred sixty-four".