1679179440 has 80 divisors (see below), whose sum is σ = 5210166528. Its totient is φ = 447376128.

The previous prime is 1679179421. The next prime is 1679179441. The reversal of 1679179440 is 449719761.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1679179440.

It is not an unprimeable number, because it can be changed into a prime (1679179441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340029 + ... + 344931.

Almost surely, 2^1679179440 is an apocalyptic number.

1679179440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1679179440 is an abundant number, since it is smaller than the sum of its proper divisors (3530987088).

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

1679179440 is a wasteful number, since it uses less digits than its factorization.

1679179440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6346 (or 6340 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 1679179440 is about 40977.7920342226. The cubic root of 1679179440 is about 1188.5908136125.

The spelling of 1679179440 in words is "one billion, six hundred seventy-nine million, one hundred seventy-nine thousand, four hundred forty".