1679739252 has 12 divisors (see below), whose sum is σ = 3919391616. Its totient is φ = 559913080.

The previous prime is 1679739241. The next prime is 1679739253. The reversal of 1679739252 is 2529379761.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1679739195 and 1679739204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1679739253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69989124 + ... + 69989147.

It is an arithmetic number, because the mean of its divisors is an integer number (326615968).

Almost surely, 2^1679739252 is an apocalyptic number.

1679739252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1679739252 is an abundant number, since it is smaller than the sum of its proper divisors (2239652364).

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

1679739252 is a wasteful number, since it uses less digits than its factorization.

1679739252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139978278 (or 139978276 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 51.

The square root of 1679739252 is about 40984.6221405053. The cubic root of 1679739252 is about 1188.7228847609.

The spelling of 1679739252 in words is "one billion, six hundred seventy-nine million, seven hundred thirty-nine thousand, two hundred fifty-two".