1879002640 has 40 divisors (see below), whose sum is σ = 4451119128. Its totient is φ = 737418240.

The previous prime is 1879002607. The next prime is 1879002661. The reversal of 1879002640 is 462009781.

It can be written as a sum of positive squares in 4 ways, for example, as 10342656 + 1868659984 = 3216^2 + 43228^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1879002640² = 7061301842253939200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1879002640.

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 7 ways as a sum of consecutive naturals, for example, 217341 + ... + 225820.

Almost surely, 2^1879002640 is an apocalyptic number.

1879002640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1879002640 is an abundant number, since it is smaller than the sum of its proper divisors (2572116488).

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

1879002640 is a wasteful number, since it uses less digits than its factorization.

1879002640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443227 (or 443221 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 1879002640 is about 43347.4640550056. The cubic root of 1879002640 is about 1233.9828676674.

The spelling of 1879002640 in words is "one billion, eight hundred seventy-nine million, two thousand, six hundred forty".