20164730619 has 8 divisors (see below), whose sum is σ = 29330517312. Its totient is φ = 12221048840.

The previous prime is 20164730581. The next prime is 20164730629. The reversal of 20164730619 is 91603746102.

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

It is not a de Polignac number, because 20164730619 - 2¹² = 20164726523 is a prime.

It is a super-2 number, since 2×20164730619² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20164730629) 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, 305526189 + ... + 305526254.

It is an arithmetic number, because the mean of its divisors is an integer number (3666314664).

Almost surely, 2^20164730619 is an apocalyptic number.

20164730619 is a deficient number, since it is larger than the sum of its proper divisors (9165786693).

20164730619 is a wasteful number, since it uses less digits than its factorization.

20164730619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611052457.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 20164730619 in words is "twenty billion, one hundred sixty-four million, seven hundred thirty thousand, six hundred nineteen".