3728498681 has 8 divisors (see below), whose sum is σ = 3862381824. Its totient is φ = 3595466160.

The previous prime is 3728498647. The next prime is 3728498717. The reversal of 3728498681 is 1868948273.

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 3728498681 - 2¹⁴ = 3728482297 is a prime.

It is a super-2 number, since 2×3728498681² = 27803404828437479522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3728498281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203726 + ... + 221271.

It is an arithmetic number, because the mean of its divisors is an integer number (482797728).

Almost surely, 2^3728498681 is an apocalyptic number.

3728498681 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3728498681 is a deficient number, since it is larger than the sum of its proper divisors (133883143).

3728498681 is a wasteful number, since it uses less digits than its factorization.

3728498681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425311.

The product of its digits is 4644864, while the sum is 56.

The square root of 3728498681 is about 61061.4336631560. The cubic root of 3728498681 is about 1550.6412443542.

The spelling of 3728498681 in words is "three billion, seven hundred twenty-eight million, four hundred ninety-eight thousand, six hundred eighty-one".