19880937 has 16 divisors (see below), whose sum is σ = 29938560. Its totient is φ = 13035600.

The previous prime is 19880933. The next prime is 19880963. The reversal of 19880937 is 73908891.

It is not a de Polignac number, because 19880937 - 2² = 19880933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19880892 and 19880901.

It is not an unprimeable number, because it can be changed into a prime (19880933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4389 + ... + 7682.

It is an arithmetic number, because the mean of its divisors is an integer number (1871160).

Almost surely, 2^19880937 is an apocalyptic number.

It is an amenable number.

19880937 is a deficient number, since it is larger than the sum of its proper divisors (10057623).

19880937 is a wasteful number, since it uses less digits than its factorization.

19880937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12141 (or 12135 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 19880937 is about 4458.8044361690. The cubic root of 19880937 is about 270.9020447253.

It can be divided in two parts, 1988093 and 7, that added together give a square (1988100 = 1410²).

The spelling of 19880937 in words is "nineteen million, eight hundred eighty thousand, nine hundred thirty-seven".