19679145 has 16 divisors (see below), whose sum is σ = 32856192. Its totient is φ = 10039040.

The previous prime is 19679129. The next prime is 19679159. The reversal of 19679145 is 54197691.

It is not a de Polignac number, because 19679145 - 2⁴ = 19679129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19679097 and 19679106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28176 + ... + 28865.

It is an arithmetic number, because the mean of its divisors is an integer number (2053512).

Almost surely, 2^19679145 is an apocalyptic number.

19679145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19679145 is a deficient number, since it is larger than the sum of its proper divisors (13177047).

19679145 is a wasteful number, since it uses less digits than its factorization.

19679145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57072.

The product of its digits is 68040, while the sum is 42.

The square root of 19679145 is about 4436.1182355749. The cubic root of 19679145 is about 269.9823719630.

The spelling of 19679145 in words is "nineteen million, six hundred seventy-nine thousand, one hundred forty-five".