8537919493849 has 2 divisors, whose sum is σ = 8537919493850. Its totient is φ = 8537919493848.

The previous prime is 8537919493813. The next prime is 8537919493903. The reversal of 8537919493849 is 9483949197358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8391913734400 + 146005759449 = 2896880^2 + 382107^2 .

It is a cyclic number.

It is not a de Polignac number, because 8537919493849 - 2⁷ = 8537919493721 is a prime.

It is not a weakly prime, because it can be changed into another prime (8537919493249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4268959746924 + 4268959746925.

It is an arithmetic number, because the mean of its divisors is an integer number (4268959746925).

Almost surely, 2^{8537919493849} is an apocalyptic number.

It is an amenable number.

8537919493849 is a deficient number, since it is larger than the sum of its proper divisors (1).

8537919493849 is an equidigital number, since it uses as much as digits as its factorization.

8537919493849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2116316160, while the sum is 79.

The spelling of 8537919493849 in words is "eight trillion, five hundred thirty-seven billion, nine hundred nineteen million, four hundred ninety-three thousand, eight hundred forty-nine".