1028912158 has 4 divisors (see below), whose sum is σ = 1543368240. Its totient is φ = 514456078.

The previous prime is 1028912147. The next prime is 1028912167. The reversal of 1028912158 is 8512198201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8512198201 = 13 ⋅654784477.

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, 257228038 + ... + 257228041.

It is an arithmetic number, because the mean of its divisors is an integer number (385842060).

Almost surely, 2^1028912158 is an apocalyptic number.

1028912158 is a deficient number, since it is larger than the sum of its proper divisors (514456082).

1028912158 is an equidigital number, since it uses as much as digits as its factorization.

1028912158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514456081.

The product of its (nonzero) digits is 11520, while the sum is 37.

The square root of 1028912158 is about 32076.6606429036. The cubic root of 1028912158 is about 1009.5459704869.

The spelling of 1028912158 in words is "one billion, twenty-eight million, nine hundred twelve thousand, one hundred fifty-eight".