1872074640 has 40 divisors (see below), whose sum is σ = 5803432128. Its totient is φ = 499219840.

The previous prime is 1872074623. The next prime is 1872074647. The reversal of 1872074640 is 464702781.

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

It is a super-2 number, since 2×1872074640² = 7009326915462259200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1872074647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3899916 + ... + 3900395.

Almost surely, 2^1872074640 is an apocalyptic number.

1872074640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1872074640 is an abundant number, since it is smaller than the sum of its proper divisors (3931357488).

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

1872074640 is a wasteful number, since it uses less digits than its factorization.

1872074640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7800327 (or 7800321 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 1872074640 is about 43267.4778557752. The cubic root of 1872074640 is about 1232.4644093038.

The spelling of 1872074640 in words is "one billion, eight hundred seventy-two million, seventy-four thousand, six hundred forty".