1780146812 has 12 divisors (see below), whose sum is σ = 3199453320. Its totient is φ = 866017296.

The previous prime is 1780146811. The next prime is 1780146827. The reversal of 1780146812 is 2186410871.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1780146811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6013862 + ... + 6014157.

It is an arithmetic number, because the mean of its divisors is an integer number (266621110).

Almost surely, 2^1780146812 is an apocalyptic number.

It is an amenable number.

1780146812 is a deficient number, since it is larger than the sum of its proper divisors (1419306508).

1780146812 is a wasteful number, since it uses less digits than its factorization.

1780146812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12028060 (or 12028058 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 1780146812 is about 42191.7860726469. The cubic root of 1780146812 is about 1211.9515923184.

The spelling of 1780146812 in words is "one billion, seven hundred eighty million, one hundred forty-six thousand, eight hundred twelve".