3897655146 has 256 divisors, whose sum is σ = 11153571840. Its totient is φ = 987940800.

The previous prime is 3897655133. The next prime is 3897655171. The reversal of 3897655146 is 6415567983.

3897655146 is a `hidden beast` number, since 3 + 89 + 7 + 6 + 551 + 4 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 3897655092 and 3897655101.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 30690135 + ... + 30690261.

It is an arithmetic number, because the mean of its divisors is an integer number (43568640).

Almost surely, 2^3897655146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3897655146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5576785920).

3897655146 is an abundant number, since it is smaller than the sum of its proper divisors (7255916694).

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

3897655146 is a wasteful number, since it uses less digits than its factorization.

3897655146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 211 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 3897655146 is about 62431.2033041171. The cubic root of 3897655146 is about 1573.7453881696.

The spelling of 3897655146 in words is "three billion, eight hundred ninety-seven million, six hundred fifty-five thousand, one hundred forty-six".