1694080980 has 60 divisors (see below), whose sum is σ = 5314399860. Its totient is φ = 451754496.

The previous prime is 1694080967. The next prime is 1694081003. The reversal of 1694080980 is 890804961.

1694080980 is a `hidden beast` number, since 169 + 408 + 0 + 9 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1253584836 + 440496144 = 35406^2 + 20988^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 521245 + ... + 524484.

It is an arithmetic number, because the mean of its divisors is an integer number (88573331).

Almost surely, 2^1694080980 is an apocalyptic number.

1694080980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1694080980 is an abundant number, since it is smaller than the sum of its proper divisors (3620318880).

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

1694080980 is a wasteful number, since it uses less digits than its factorization.

1694080980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045750 (or 1045739 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1694080980 is about 41159.2150070917. The cubic root of 1694080980 is about 1192.0964339876.

The spelling of 1694080980 in words is "one billion, six hundred ninety-four million, eighty thousand, nine hundred eighty".