3977783516 has 12 divisors (see below), whose sum is σ = 7955567088. Its totient is φ = 1704764352.

The previous prime is 3977783489. The next prime is 3977783597. The reversal of 3977783516 is 6153877793.

3977783516 is an admirable number.

It is a super-2 number, since 2×3977783516² = 31645523400322644512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71031821 + ... + 71031876.

It is an arithmetic number, because the mean of its divisors is an integer number (662963924).

Almost surely, 2^3977783516 is an apocalyptic number.

It is an amenable number.

3977783516 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3977783516 is a wasteful number, since it uses less digits than its factorization.

3977783516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142063708 (or 142063706 counting only the distinct ones).

The product of its digits is 6667920, while the sum is 56.

The square root of 3977783516 is about 63069.6719192355. The cubic root of 3977783516 is about 1584.4567216598.

The spelling of 3977783516 in words is "three billion, nine hundred seventy-seven million, seven hundred eighty-three thousand, five hundred sixteen".