1628774794 has 8 divisors (see below), whose sum is σ = 2586877668. Its totient is φ = 766482240.

The previous prime is 1628774789. The next prime is 1628774803. The reversal of 1628774794 is 4974778261.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1212084225 + 416690569 = 34815^2 + 20413^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23952537 + ... + 23952604.

Almost surely, 2^1628774794 is an apocalyptic number.

1628774794 is a deficient number, since it is larger than the sum of its proper divisors (958102874).

1628774794 is a wasteful number, since it uses less digits than its factorization.

1628774794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47905160.

The product of its digits is 4741632, while the sum is 55.

The square root of 1628774794 is about 40358.0821397648. The cubic root of 1628774794 is about 1176.5769787571.

The spelling of 1628774794 in words is "one billion, six hundred twenty-eight million, seven hundred seventy-four thousand, seven hundred ninety-four".