3897794020 has 24 divisors (see below), whose sum is σ = 8266414968. Its totient is φ = 1543680000.

The previous prime is 3897794011. The next prime is 3897794053. The reversal of 3897794020 is 204977983.

It can be written as a sum of positive squares in 4 ways, for example, as 1456643556 + 2441150464 = 38166^2 + 49408^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962781 + ... + 966820.

It is an arithmetic number, because the mean of its divisors is an integer number (344433957).

Almost surely, 2^3897794020 is an apocalyptic number.

It is an amenable number.

3897794020 is an abundant number, since it is smaller than the sum of its proper divisors (4368620948).

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

3897794020 is a wasteful number, since it uses less digits than its factorization.

3897794020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929711 (or 1929709 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 3897794020 is about 62432.3155104790. The cubic root of 3897794020 is about 1573.7640788706.

The spelling of 3897794020 in words is "three billion, eight hundred ninety-seven million, seven hundred ninety-four thousand, twenty".