19621040074 has 4 divisors (see below), whose sum is σ = 29431560114. Its totient is φ = 9810520036.

The previous prime is 19621040041. The next prime is 19621040107. The reversal of 19621040074 is 47004012691.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (19621040041) and next prime (19621040107).

It can be written as a sum of positive squares in only one way, i.e., 17839609225 + 1781430849 = 133565^2 + 42207^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4905260017 + ... + 4905260020.

Almost surely, 2^19621040074 is an apocalyptic number.

19621040074 is a deficient number, since it is larger than the sum of its proper divisors (9810520040).

19621040074 is an equidigital number, since it uses as much as digits as its factorization.

19621040074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9810520039.

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 19621040074 in words is "nineteen billion, six hundred twenty-one million, forty thousand, seventy-four".