3780018728 has 64 divisors (see below), whose sum is σ = 7432128000. Its totient is φ = 1800288000.

The previous prime is 3780018727. The next prime is 3780018761. The reversal of 3780018728 is 8278100873.

It is not an unprimeable number, because it can be changed into a prime (3780018727) 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, 5735663 + ... + 5736321.

It is an arithmetic number, because the mean of its divisors is an integer number (116127000).

Almost surely, 2^3780018728 is an apocalyptic number.

It is an amenable number.

3780018728 is a deficient number, since it is larger than the sum of its proper divisors (3652109272).

3780018728 is a wasteful number, since it uses less digits than its factorization.

3780018728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 44.

The square root of 3780018728 is about 61481.8569010403. The cubic root of 3780018728 is about 1557.7508031709.

The spelling of 3780018728 in words is "three billion, seven hundred eighty million, eighteen thousand, seven hundred twenty-eight".