19097018840 has 32 divisors (see below), whose sum is σ = 42996642480. Its totient is φ = 7633767552.

The previous prime is 19097018819. The next prime is 19097018861. The reversal of 19097018840 is 4881079091.

It is an interprime number because it is at equal distance from previous prime (19097018819) and next prime (19097018861).

It is a super-2 number, since 2×19097018840² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95819 + ... + 217658.

Almost surely, 2^19097018840 is an apocalyptic number.

19097018840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19097018840 is an abundant number, since it is smaller than the sum of its proper divisors (23899623640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19097018840 is a wasteful number, since it uses less digits than its factorization.

19097018840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315011 (or 315007 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 47.

The spelling of 19097018840 in words is "nineteen billion, ninety-seven million, eighteen thousand, eight hundred forty".