19106397 has 12 divisors (see below), whose sum is σ = 27867424. Its totient is φ = 12613320.

The previous prime is 19106357. The next prime is 19106401. The reversal of 19106397 is 79360191.

19106397 is a `hidden beast` number, since 1 + 9 + 10 + 639 + 7 = 666.

It is not a de Polignac number, because 19106397 - 2⁸ = 19106141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19106327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9379 + ... + 11232.

Almost surely, 2^19106397 is an apocalyptic number.

It is an amenable number.

19106397 is a deficient number, since it is larger than the sum of its proper divisors (8761027).

19106397 is a wasteful number, since it uses less digits than its factorization.

19106397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20720 (or 20717 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 19106397 is about 4371.0864782111. The cubic root of 19106397 is about 267.3373256135.

It can be divided in two parts, 19106 and 397, that added together give a triangular number (19503 = T₁₉₇).

The spelling of 19106397 in words is "nineteen million, one hundred six thousand, three hundred ninety-seven".