6181946128 has 10 divisors (see below), whose sum is σ = 11977520654. Its totient is φ = 3090973056.

The previous prime is 6181946081. The next prime is 6181946149. The reversal of 6181946128 is 8216491816.

It can be written as a sum of positive squares in only one way, i.e., 6076514304 + 105431824 = 77952^2 + 10268^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193185801 + ... + 193185832.

Almost surely, 2^6181946128 is an apocalyptic number.

It is an amenable number.

6181946128 is a deficient number, since it is larger than the sum of its proper divisors (5795574526).

6181946128 is a wasteful number, since it uses less digits than its factorization.

6181946128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386371641 (or 386371635 counting only the distinct ones).

The product of its digits is 165888, while the sum is 46.

The square root of 6181946128 is about 78625.3529594621. The cubic root of 6181946128 is about 1835.3056660039.

The spelling of 6181946128 in words is "six billion, one hundred eighty-one million, nine hundred forty-six thousand, one hundred twenty-eight".