1967128256 has 14 divisors (see below), whose sum is σ = 3903520260. Its totient is φ = 983564096.

The previous prime is 1967128253. The next prime is 1967128277. The reversal of 1967128256 is 6528217691.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1967128256.

It is not an unprimeable number, because it can be changed into a prime (1967128253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15368126 + ... + 15368253.

Almost surely, 2^1967128256 is an apocalyptic number.

1967128256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1967128256 is a deficient number, since it is larger than the sum of its proper divisors (1936392004).

1967128256 is an equidigital number, since it uses as much as digits as its factorization.

1967128256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30736391 (or 30736381 counting only the distinct ones).

The product of its digits is 362880, while the sum is 47.

The square root of 1967128256 is about 44352.3196236679. The cubic root of 1967128256 is about 1252.9802501204.

The spelling of 1967128256 in words is "one billion, nine hundred sixty-seven million, one hundred twenty-eight thousand, two hundred fifty-six".