3878269956 has 120 divisors (see below), whose sum is σ = 11242197120. Its totient is φ = 1155902400.

The previous prime is 3878269943. The next prime is 3878269961. The reversal of 3878269956 is 6599628783.

It is a super-2 number, since 2×3878269956² = 30081955703224483872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3878269893 and 3878269902.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 208485 + ... + 226323.

It is an arithmetic number, because the mean of its divisors is an integer number (93684976).

Almost surely, 2^3878269956 is an apocalyptic number.

3878269956 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3878269956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5621098560).

3878269956 is an abundant number, since it is smaller than the sum of its proper divisors (7363927164).

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

3878269956 is a wasteful number, since it uses less digits than its factorization.

3878269956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17927 (or 17916 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 63.

The square root of 3878269956 is about 62275.7573699429. The cubic root of 3878269956 is about 1571.1320160211.

The spelling of 3878269956 in words is "three billion, eight hundred seventy-eight million, two hundred sixty-nine thousand, nine hundred fifty-six".