19970938 has 16 divisors (see below), whose sum is σ = 33959520. Its totient is φ = 8732016.

The previous prime is 19970897. The next prime is 19970941. The reversal of 19970938 is 83907991.

It is a cake number, because a cake can be divided into 19970938 parts by 493 planar cuts.

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, 19720 + ... + 20707.

It is an arithmetic number, because the mean of its divisors is an integer number (2122470).

Almost surely, 2^19970938 is an apocalyptic number.

19970938 is a deficient number, since it is larger than the sum of its proper divisors (13988582).

19970938 is a wasteful number, since it uses less digits than its factorization.

19970938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40461.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 19970938 is about 4468.8855433989. The cubic root of 19970938 is about 271.3102205835.

The spelling of 19970938 in words is "nineteen million, nine hundred seventy thousand, nine hundred thirty-eight".