3728831894 has 4 divisors (see below), whose sum is σ = 5593247844. Its totient is φ = 1864415946.

The previous prime is 3728831863. The next prime is 3728831923. The reversal of 3728831894 is 4981388273.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4981388273 = 971 ⋅5130163.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 932207972 + ... + 932207975.

It is an arithmetic number, because the mean of its divisors is an integer number (1398311961).

Almost surely, 2^3728831894 is an apocalyptic number.

3728831894 is a deficient number, since it is larger than the sum of its proper divisors (1864415950).

3728831894 is a wasteful number, since it uses less digits than its factorization.

3728831894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864415949.

The product of its digits is 2322432, while the sum is 53.

The square root of 3728831894 is about 61064.1621083922. The cubic root of 3728831894 is about 1550.6874361750.

The spelling of 3728831894 in words is "three billion, seven hundred twenty-eight million, eight hundred thirty-one thousand, eight hundred ninety-four".