3938213042 has 16 divisors (see below), whose sum is σ = 6242192640. Its totient is φ = 1859649792.

The previous prime is 3938213017. The next prime is 3938213051. The reversal of 3938213042 is 2403128393.

It is a junction number, because it is equal to n+sod(n) for n = 3938212993 and 3938213011.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538223 + ... + 545490.

It is an arithmetic number, because the mean of its divisors is an integer number (390137040).

Almost surely, 2^3938213042 is an apocalyptic number.

3938213042 is a deficient number, since it is larger than the sum of its proper divisors (2303979598).

3938213042 is a wasteful number, since it uses less digits than its factorization.

3938213042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083817.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 3938213042 is about 62755.1833875099. The cubic root of 3938213042 is about 1579.1852128076.

The spelling of 3938213042 in words is "three billion, nine hundred thirty-eight million, two hundred thirteen thousand, forty-two".