1679645394 has 48 divisors (see below), whose sum is σ = 4229634240. Its totient is φ = 471762720.

The previous prime is 1679645389. The next prime is 1679645417. The reversal of 1679645394 is 4935469761.

1679645394 is a `hidden beast` number, since 16 + 7 + 96 + 4 + 539 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1679645394.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105537 + ... + 120404.

It is an arithmetic number, because the mean of its divisors is an integer number (88117380).

Almost surely, 2^1679645394 is an apocalyptic number.

1679645394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1679645394 is an abundant number, since it is smaller than the sum of its proper divisors (2549988846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1679645394 is a wasteful number, since it uses less digits than its factorization.

1679645394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226015 (or 226012 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 1679645394 is about 40983.4770852840. The cubic root of 1679645394 is about 1188.7007437787.

The spelling of 1679645394 in words is "one billion, six hundred seventy-nine million, six hundred forty-five thousand, three hundred ninety-four".