3728916242 has 4 divisors (see below), whose sum is σ = 5593374366. Its totient is φ = 1864458120.

The previous prime is 3728916241. The next prime is 3728916293. The reversal of 3728916242 is 2426198273.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2864497441 + 864418801 = 53521^2 + 29401^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3728916193 and 3728916202.

It is not an unprimeable number, because it can be changed into a prime (3728916241) 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 as a sum of consecutive naturals, namely, 932229059 + ... + 932229062.

Almost surely, 2^3728916242 is an apocalyptic number.

3728916242 is a deficient number, since it is larger than the sum of its proper divisors (1864458124).

3728916242 is a wasteful number, since it uses less digits than its factorization.

3728916242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864458123.

The product of its digits is 290304, while the sum is 44.

The square root of 3728916242 is about 61064.8527550833. The cubic root of 3728916242 is about 1550.6991285228.

The spelling of 3728916242 in words is "three billion, seven hundred twenty-eight million, nine hundred sixteen thousand, two hundred forty-two".