19145973 has 16 divisors (see below), whose sum is σ = 31827456. Its totient is φ = 9945840.

The previous prime is 19145969. The next prime is 19146007. The reversal of 19145973 is 37954191.

It is a happy number.

It is not a de Polignac number, because 19145973 - 2² = 19145969 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19145923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41211 + ... + 41672.

It is an arithmetic number, because the mean of its divisors is an integer number (1989216).

Almost surely, 2^19145973 is an apocalyptic number.

It is an amenable number.

19145973 is a deficient number, since it is larger than the sum of its proper divisors (12681483).

19145973 is a wasteful number, since it uses less digits than its factorization.

19145973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82904.

The product of its digits is 34020, while the sum is 39.

The square root of 19145973 is about 4375.6111573128. The cubic root of 19145973 is about 267.5217812060.

It can be divided in two parts, 1914 and 5973, that added together give a palindrome (7887).

The spelling of 19145973 in words is "nineteen million, one hundred forty-five thousand, nine hundred seventy-three".