1780862468 has 72 divisors (see below), whose sum is σ = 3973273920. Its totient is φ = 690621120.

The previous prime is 1780862437. The next prime is 1780862471. The reversal of 1780862468 is 8642680871.

It is a super-2 number, since 2×1780862468² = 6342942259862102048, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 491921 + ... + 495527.

It is an arithmetic number, because the mean of its divisors is an integer number (55184360).

Almost surely, 2^1780862468 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1780862468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1986636960).

1780862468 is an abundant number, since it is smaller than the sum of its proper divisors (2192411452).

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

1780862468 is a wasteful number, since it uses less digits than its factorization.

1780862468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3865 (or 3856 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 50.

The square root of 1780862468 is about 42200.2662076912. The cubic root of 1780862468 is about 1212.1139804652.

The spelling of 1780862468 in words is "one billion, seven hundred eighty million, eight hundred sixty-two thousand, four hundred sixty-eight".