19920901 has 24 divisors (see below), whose sum is σ = 27234144. Its totient is φ = 14323680.

The previous prime is 19920899. The next prime is 19920907. The reversal of 19920901 is 10902991.

It is not a de Polignac number, because 19920901 - 2¹ = 19920899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19920907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5586 + ... + 8428.

It is an arithmetic number, because the mean of its divisors is an integer number (1134756).

Almost surely, 2^19920901 is an apocalyptic number.

19920901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

19920901 is a deficient number, since it is larger than the sum of its proper divisors (7313243).

19920901 is a wasteful number, since it uses less digits than its factorization.

19920901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881 (or 2874 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 19920901 is about 4463.2836566815. The cubic root of 19920901 is about 271.0834426672.

The spelling of 19920901 in words is "nineteen million, nine hundred twenty thousand, nine hundred one".