19419797870 has 32 divisors (see below), whose sum is σ = 38144691936. Its totient is φ = 7059657600.

The previous prime is 19419797863. The next prime is 19419797921. The reversal of 19419797870 is 7879791491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375800 + ... + 424340.

It is an arithmetic number, because the mean of its divisors is an integer number (1192021623).

Almost surely, 2^19419797870 is an apocalyptic number.

19419797870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19419797870 is a deficient number, since it is larger than the sum of its proper divisors (18724894066).

19419797870 is a wasteful number, since it uses less digits than its factorization.

19419797870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52196.

The product of its (nonzero) digits is 8001504, while the sum is 62.

The spelling of 19419797870 in words is "nineteen billion, four hundred nineteen million, seven hundred ninety-seven thousand, eight hundred seventy".