19408897030 has 8 divisors (see below), whose sum is σ = 34936014672. Its totient is φ = 7763558808.

The previous prime is 19408897007. The next prime is 19408897031. The reversal of 19408897030 is 3079880491.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×19408897030² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19408897031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 970444842 + ... + 970444861.

It is an arithmetic number, because the mean of its divisors is an integer number (4367001834).

Almost surely, 2^19408897030 is an apocalyptic number.

19408897030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19408897030 is a deficient number, since it is larger than the sum of its proper divisors (15527117642).

19408897030 is a wasteful number, since it uses less digits than its factorization.

19408897030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940889710.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 19408897030 in words is "nineteen billion, four hundred eight million, eight hundred ninety-seven thousand, thirty".