19872373 has 2 divisors, whose sum is σ = 19872374. Its totient is φ = 19872372.

The previous prime is 19872353. The next prime is 19872379. The reversal of 19872373 is 37327891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15944049 + 3928324 = 3993^2 + 1982^2 .

It is a cyclic number.

It is not a de Polignac number, because 19872373 - 2¹³ = 19864181 is a prime.

It is a super-2 number, since 2×19872373² = 789822417302258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19872379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9936186 + 9936187.

It is an arithmetic number, because the mean of its divisors is an integer number (9936187).

Almost surely, 2^19872373 is an apocalyptic number.

It is an amenable number.

19872373 is a deficient number, since it is larger than the sum of its proper divisors (1).

19872373 is an equidigital number, since it uses as much as digits as its factorization.

19872373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 40.

The square root of 19872373 is about 4457.8439856056. The cubic root of 19872373 is about 270.8631408192.

The spelling of 19872373 in words is "nineteen million, eight hundred seventy-two thousand, three hundred seventy-three".