1028545816 has 8 divisors (see below), whose sum is σ = 1928523420. Its totient is φ = 514272904.

The previous prime is 1028545801. The next prime is 1028545841. The reversal of 1028545816 is 6185458201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1028545816² = 2115812991222211712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64284106 + ... + 64284121.

Almost surely, 2^1028545816 is an apocalyptic number.

It is an amenable number.

1028545816 is a deficient number, since it is larger than the sum of its proper divisors (899977604).

1028545816 is a wasteful number, since it uses less digits than its factorization.

1028545816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128568233 (or 128568229 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 1028545816 is about 32070.9497208923. The cubic root of 1028545816 is about 1009.4261406941.

The spelling of 1028545816 in words is "one billion, twenty-eight million, five hundred forty-five thousand, eight hundred sixteen".