19624087396 has 27 divisors (see below), whose sum is σ = 34776544089. Its totient is φ = 9689468448.

The previous prime is 19624087369. The next prime is 19624087397. The reversal of 19624087396 is 69378042691.

The square root of 19624087396 is 140086.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3768240996 + 15855846400 = 61386^2 + 125920^2 .

It is a super-2 number, since 2×19624087396² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19624087397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 24934915 + ... + 24935701.

Almost surely, 2^19624087396 is an apocalyptic number.

19624087396 is the 140086-th square number.

It is an amenable number.

19624087396 is a deficient number, since it is larger than the sum of its proper divisors (15152456693).

19624087396 is an frugal number, since it uses more digits than its factorization.

19624087396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756 (or 878 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 19624087396 in words is "nineteen billion, six hundred twenty-four million, eighty-seven thousand, three hundred ninety-six".