6894645156 has 135 divisors (see below), whose sum is σ = 20998516539. Its totient is φ = 1966909392.

The previous prime is 6894645143. The next prime is 6894645169. The reversal of 6894645156 is 6515464986.

The square root of 6894645156 is 83034.

It is a perfect power (a square), and thus also a powerful number.

6894645156 is a `hidden beast` number, since 6 + 89 + 46 + 4 + 515 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (6894645143) and next prime (6894645169).

It is a super-2 number, since 2×6894645156² = 95072263654308528672, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 10461955 + ... + 10462613.

Almost surely, 2^6894645156 is an apocalyptic number.

6894645156 is the 83034-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6894645156

6894645156 is an abundant number, since it is smaller than the sum of its proper divisors (14103871383).

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

6894645156 is an equidigital number, since it uses as much as digits as its factorization.

6894645156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348 (or 671 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The cubic root of 6894645156 is about 1903.2856496966.

The spelling of 6894645156 in words is "six billion, eight hundred ninety-four million, six hundred forty-five thousand, one hundred fifty-six".