49154403868189 has 2 divisors, whose sum is σ = 49154403868190. Its totient is φ = 49154403868188.

The previous prime is 49154403868153. The next prime is 49154403868259. The reversal of 49154403868189 is 98186830445194.

It is an a-pointer prime, because the next prime (49154403868259) can be obtained adding 49154403868189 to its sum of digits (70).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35492938184025 + 13661465684164 = 5957595^2 + 3696142^2 .

It is a cyclic number.

It is not a de Polignac number, because 49154403868189 - 2¹³ = 49154403859997 is a prime.

It is a super-2 number, since 2×49154403868189² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49154403868139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24577201934094 + 24577201934095.

It is an arithmetic number, because the mean of its divisors is an integer number (24577201934095).

Almost surely, 2^{49154403868189} is an apocalyptic number.

It is an amenable number.

49154403868189 is a deficient number, since it is larger than the sum of its proper divisors (1).

49154403868189 is an equidigital number, since it uses as much as digits as its factorization.

49154403868189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238878720, while the sum is 70.

The spelling of 49154403868189 in words is "forty-nine trillion, one hundred fifty-four billion, four hundred three million, eight hundred sixty-eight thousand, one hundred eighty-nine".