19790180029 has 8 divisors (see below), whose sum is σ = 21676871160. Its totient is φ = 17983773696.

The previous prime is 19790180009. The next prime is 19790180057. The reversal of 19790180029 is 92008109791.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 607376025 + 19182804004 = 24645^2 + 138502^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19790180029 - 2⁷ = 19790179901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19790180009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20070684 + ... + 20071669.

It is an arithmetic number, because the mean of its divisors is an integer number (2709608895).

Almost surely, 2^19790180029 is an apocalyptic number.

It is an amenable number.

19790180029 is a deficient number, since it is larger than the sum of its proper divisors (1886691131).

19790180029 is a wasteful number, since it uses less digits than its factorization.

19790180029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40142399.

The product of its (nonzero) digits is 81648, while the sum is 46.

The spelling of 19790180029 in words is "nineteen billion, seven hundred ninety million, one hundred eighty thousand, twenty-nine".