3728624581 has 8 divisors (see below), whose sum is σ = 4281674400. Its totient is φ = 3211255440.

The previous prime is 3728624563. The next prime is 3728624591. The reversal of 3728624581 is 1854268273.

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

It is a cyclic number.

It is not a de Polignac number, because 3728624581 - 2¹³ = 3728616389 is a prime.

It is a super-2 number, since 2×3728624581² = 27805282532074851122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728624591) by changing a digit.

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, 8919946 + ... + 8920363.

It is an arithmetic number, because the mean of its divisors is an integer number (535209300).

Almost surely, 2^3728624581 is an apocalyptic number.

It is an amenable number.

3728624581 is a deficient number, since it is larger than the sum of its proper divisors (553049819).

3728624581 is a wasteful number, since it uses less digits than its factorization.

3728624581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17840339.

The product of its digits is 645120, while the sum is 46.

The square root of 3728624581 is about 61062.4645834084. The cubic root of 3728624581 is about 1550.6586976289.

The spelling of 3728624581 in words is "three billion, seven hundred twenty-eight million, six hundred twenty-four thousand, five hundred eighty-one".