3728562731 has 2 divisors, whose sum is σ = 3728562732. Its totient is φ = 3728562730.

The previous prime is 3728562713. The next prime is 3728562749. The reversal of 3728562731 is 1372658273.

Together with previous prime (3728562713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (3728562713) and next prime (3728562749).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3728562731 is a prime.

It is a super-2 number, since 2×3728562731² = 27804360078004356722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3728562701) 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 as a sum of consecutive naturals, namely, 1864281365 + 1864281366.

It is an arithmetic number, because the mean of its divisors is an integer number (1864281366).

Almost surely, 2^3728562731 is an apocalyptic number.

3728562731 is a deficient number, since it is larger than the sum of its proper divisors (1).

3728562731 is an equidigital number, since it uses as much as digits as its factorization.

3728562731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 44.

The square root of 3728562731 is about 61061.9581327032. The cubic root of 3728562731 is about 1550.6501235315.

The spelling of 3728562731 in words is "three billion, seven hundred twenty-eight million, five hundred sixty-two thousand, seven hundred thirty-one".