19206457149 has 32 divisors (see below), whose sum is σ = 29593309824. Its totient is φ = 10950625280.

The previous prime is 19206457147. The next prime is 19206457199. The reversal of 19206457149 is 94175460291.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 19206457149 - 2¹ = 19206457147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19206457098 and 19206457107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19206457147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1504417 + ... + 1517129.

It is an arithmetic number, because the mean of its divisors is an integer number (924790932).

Almost surely, 2^19206457149 is an apocalyptic number.

It is an amenable number.

19206457149 is a deficient number, since it is larger than the sum of its proper divisors (10386852675).

19206457149 is a wasteful number, since it uses less digits than its factorization.

19206457149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15437.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 19206457149 in words is "nineteen billion, two hundred six million, four hundred fifty-seven thousand, one hundred forty-nine".