19691622902 has 16 divisors (see below), whose sum is σ = 34846006272. Its totient is φ = 8167032360.

The previous prime is 19691622877. The next prime is 19691622953. The reversal of 19691622902 is 20922619691.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22685768 + ... + 22686635.

It is an arithmetic number, because the mean of its divisors is an integer number (2177875392).

Almost surely, 2^19691622902 is an apocalyptic number.

19691622902 is a deficient number, since it is larger than the sum of its proper divisors (15154383370).

19691622902 is a wasteful number, since it uses less digits than its factorization.

19691622902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45372443.

The product of its (nonzero) digits is 209952, while the sum is 47.

The spelling of 19691622902 in words is "nineteen billion, six hundred ninety-one million, six hundred twenty-two thousand, nine hundred two".