986128641 has 8 divisors (see below), whose sum is σ = 1460931360. Its totient is φ = 657419076.

The previous prime is 986128609. The next prime is 986128643. The reversal of 986128641 is 146821689.

It is not a de Polignac number, because 986128641 - 2⁵ = 986128609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (986128643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18261615 + ... + 18261668.

It is an arithmetic number, because the mean of its divisors is an integer number (182616420).

Almost surely, 2^986128641 is an apocalyptic number.

It is an amenable number.

986128641 is a deficient number, since it is larger than the sum of its proper divisors (474802719).

986128641 is a wasteful number, since it uses less digits than its factorization.

986128641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36523292 (or 36523286 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 986128641 is about 31402.6852514240. The cubic root of 986128641 is about 995.3546679711.

The spelling of 986128641 in words is "nine hundred eighty-six million, one hundred twenty-eight thousand, six hundred forty-one".