19905466892 has 6 divisors (see below), whose sum is σ = 34834567068. Its totient is φ = 9952733444.

The previous prime is 19905466879. The next prime is 19905466901. The reversal of 19905466892 is 29866450991.

It is a super-2 number, since 2×19905466892² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2488183358 + ... + 2488183365.

It is an arithmetic number, because the mean of its divisors is an integer number (5805761178).

Almost surely, 2^19905466892 is an apocalyptic number.

It is an amenable number.

19905466892 is a deficient number, since it is larger than the sum of its proper divisors (14929100176).

19905466892 is a wasteful number, since it uses less digits than its factorization.

19905466892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4976366727 (or 4976366725 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 59.

The spelling of 19905466892 in words is "nineteen billion, nine hundred five million, four hundred sixty-six thousand, eight hundred ninety-two".