19908051 has 4 divisors (see below), whose sum is σ = 26544072. Its totient is φ = 13272032.

The previous prime is 19908023. The next prime is 19908059. The reversal of 19908051 is 15080991.

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

It is a cyclic number.

It is not a de Polignac number, because 19908051 - 2⁹ = 19907539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19908059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3318006 + ... + 3318011.

It is an arithmetic number, because the mean of its divisors is an integer number (6636018).

Almost surely, 2^19908051 is an apocalyptic number.

19908051 is a deficient number, since it is larger than the sum of its proper divisors (6636021).

19908051 is an equidigital number, since it uses as much as digits as its factorization.

19908051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6636020.

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 19908051 is about 4461.8439013484. The cubic root of 19908051 is about 271.0251425682.

The spelling of 19908051 in words is "nineteen million, nine hundred eight thousand, fifty-one".