1679985530 has 8 divisors (see below), whose sum is σ = 3023973972. Its totient is φ = 671994208.

The previous prime is 1679985497. The next prime is 1679985547. The reversal of 1679985530 is 355899761.

It can be written as a sum of positive squares in 2 ways, for example, as 1679442361 + 543169 = 40981^2 + 737^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83999267 + ... + 83999286.

Almost surely, 2^1679985530 is an apocalyptic number.

1679985530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1679985530 is a deficient number, since it is larger than the sum of its proper divisors (1343988442).

1679985530 is a wasteful number, since it uses less digits than its factorization.

1679985530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167998560.

The product of its (nonzero) digits is 2041200, while the sum is 53.

The square root of 1679985530 is about 40987.6265475326. The cubic root of 1679985530 is about 1188.7809775051.

The spelling of 1679985530 in words is "one billion, six hundred seventy-nine million, nine hundred eighty-five thousand, five hundred thirty".