4028177961 has 12 divisors (see below), whose sum is σ = 5872858992. Its totient is φ = 2660353656.

The previous prime is 4028177947. The next prime is 4028178019. The reversal of 4028177961 is 1697718204.

It is a happy number.

It is not a de Polignac number, because 4028177961 - 2¹⁷ = 4028046889 is a prime.

It is a super-2 number, since 2×4028177961² = 32452435370972235042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4028177941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2090511 + ... + 2092436.

It is an arithmetic number, because the mean of its divisors is an integer number (489404916).

Almost surely, 2^4028177961 is an apocalyptic number.

It is an amenable number.

4028177961 is a deficient number, since it is larger than the sum of its proper divisors (1844681031).

4028177961 is a wasteful number, since it uses less digits than its factorization.

4028177961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183060 (or 4183057 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 4028177961 is about 63467.9286017749. The cubic root of 4028177961 is about 1591.1198104154.

The spelling of 4028177961 in words is "four billion, twenty-eight million, one hundred seventy-seven thousand, nine hundred sixty-one".