1028539801 has 8 divisors (see below), whose sum is σ = 1059542144. Its totient is φ = 997706160.

The previous prime is 1028539777. The next prime is 1028539823. The reversal of 1028539801 is 1089358201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1028539801 - 2²⁷ = 894322073 is a prime.

It is a super-2 number, since 2×1028539801² = 2115788244482239202, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028539871) 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, 29745 + ... + 54238.

It is an arithmetic number, because the mean of its divisors is an integer number (132442768).

Almost surely, 2^1028539801 is an apocalyptic number.

It is an amenable number.

1028539801 is a deficient number, since it is larger than the sum of its proper divisors (31002343).

1028539801 is an equidigital number, since it uses as much as digits as its factorization.

1028539801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84351.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 1028539801 is about 32070.8559442993. The cubic root of 1028539801 is about 1009.4241729612.

It can be divided in two parts, 10285 and 39801, that added together give a triangular number (50086 = T₃₁₆).

The spelling of 1028539801 in words is "one billion, twenty-eight million, five hundred thirty-nine thousand, eight hundred one".