19210274004 has 12 divisors (see below), whose sum is σ = 44823972704. Its totient is φ = 6403424664.

The previous prime is 19210273993. The next prime is 19210274009. The reversal of 19210274004 is 40047201291.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19210274009) 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, 800428072 + ... + 800428095.

Almost surely, 2^19210274004 is an apocalyptic number.

It is an amenable number.

19210274004 is an abundant number, since it is smaller than the sum of its proper divisors (25613698700).

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

19210274004 is a wasteful number, since it uses less digits than its factorization.

19210274004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600856174 (or 1600856172 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

Adding to 19210274004 its reverse (40047201291), we get a palindrome (59257475295).

The spelling of 19210274004 in words is "nineteen billion, two hundred ten million, two hundred seventy-four thousand, four".