3918521794 has 32 divisors (see below), whose sum is σ = 6798447936. Its totient is φ = 1674117120.

The previous prime is 3918521767. The next prime is 3918521797. The reversal of 3918521794 is 4971258193.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3918521797) 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, 287682 + ... + 300994.

It is an arithmetic number, because the mean of its divisors is an integer number (212451498).

Almost surely, 2^3918521794 is an apocalyptic number.

3918521794 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

3918521794 is a deficient number, since it is larger than the sum of its proper divisors (2879926142).

3918521794 is a wasteful number, since it uses less digits than its factorization.

3918521794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14130.

The product of its digits is 544320, while the sum is 49.

The square root of 3918521794 is about 62598.0973672523. The cubic root of 3918521794 is about 1576.5488140873.

The spelling of 3918521794 in words is "three billion, nine hundred eighteen million, five hundred twenty-one thousand, seven hundred ninety-four".