3728350981 has 8 divisors (see below), whose sum is σ = 3927722400. Its totient is φ = 3529293840.

The previous prime is 3728350963. The next prime is 3728351009. The reversal of 3728350981 is 1890538273.

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 3728350981 - 2¹⁷ = 3728219909 is a prime.

It is a super-2 number, since 2×3728350981² = 27801202075047324722, 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 (3728350921) 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, 54010 + ... + 101851.

It is an arithmetic number, because the mean of its divisors is an integer number (490965300).

Almost surely, 2^3728350981 is an apocalyptic number.

It is an amenable number.

3728350981 is a deficient number, since it is larger than the sum of its proper divisors (199371419).

3728350981 is a wasteful number, since it uses less digits than its factorization.

3728350981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157139.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 3728350981 is about 61060.2242134763. The cubic root of 3728350981 is about 1550.6207684866.

The spelling of 3728350981 in words is "three billion, seven hundred twenty-eight million, three hundred fifty thousand, nine hundred eighty-one".