1022478785 has 8 divisors (see below), whose sum is σ = 1228170816. Its totient is φ = 817185520.

The previous prime is 1022478763. The next prime is 1022478829. The reversal of 1022478785 is 5878742201.

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

It is a de Polignac number, because none of the positive numbers 2^k-1022478785 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94019 + ... + 104328.

It is an arithmetic number, because the mean of its divisors is an integer number (153521352).

Almost surely, 2^1022478785 is an apocalyptic number.

It is an amenable number.

1022478785 is a deficient number, since it is larger than the sum of its proper divisors (205692031).

1022478785 is a wasteful number, since it uses less digits than its factorization.

1022478785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199383.

The product of its (nonzero) digits is 250880, while the sum is 44.

The square root of 1022478785 is about 31976.2221814898. Note that the first 3 decimals coincide. The cubic root of 1022478785 is about 1007.4374751594.

The spelling of 1022478785 in words is "one billion, twenty-two million, four hundred seventy-eight thousand, seven hundred eighty-five".