3780487805 has 16 divisors (see below), whose sum is σ = 4735480320. Its totient is φ = 2891885568.

The previous prime is 3780487787. The next prime is 3780487807. The reversal of 3780487805 is 5087840873.

It is a cyclic number.

It is not a de Polignac number, because 3780487805 - 2²² = 3776293501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3780487807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 637484 + ... + 643386.

It is an arithmetic number, because the mean of its divisors is an integer number (295967520).

Almost surely, 2^3780487805 is an apocalyptic number.

It is an amenable number.

3780487805 is a deficient number, since it is larger than the sum of its proper divisors (954992515).

3780487805 is a wasteful number, since it uses less digits than its factorization.

3780487805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11500.

The product of its (nonzero) digits is 1505280, while the sum is 50.

The square root of 3780487805 is about 61485.6715422382. The cubic root of 3780487805 is about 1557.8152362600.

The spelling of 3780487805 in words is "three billion, seven hundred eighty million, four hundred eighty-seven thousand, eight hundred five".