19897065034 has 96 divisors (see below), whose sum is σ = 38368044288. Its totient is φ = 7572787200.

The previous prime is 19897065007. The next prime is 19897065043. The reversal of 19897065034 is 43056079891.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17256202 + ... + 17257354.

It is an arithmetic number, because the mean of its divisors is an integer number (399667128).

Almost surely, 2^19897065034 is an apocalyptic number.

19897065034 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19897065034 is a deficient number, since it is larger than the sum of its proper divisors (18470979254).

19897065034 is a wasteful number, since it uses less digits than its factorization.

19897065034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412 (or 1401 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 19897065034 in words is "nineteen billion, eight hundred ninety-seven million, sixty-five thousand, thirty-four".