191837005601 has 2 divisors, whose sum is σ = 191837005602. Its totient is φ = 191837005600.

The previous prime is 191837005571. The next prime is 191837005663. The reversal of 191837005601 is 106500738191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182862285376 + 8974720225 = 427624^2 + 94735^2 .

It is a cyclic number.

It is not a de Polignac number, because 191837005601 - 2³⁰ = 190763263777 is a prime.

It is not a weakly prime, because it can be changed into another prime (191837005201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95918502800 + 95918502801.

It is an arithmetic number, because the mean of its divisors is an integer number (95918502801).

Almost surely, 2^191837005601 is an apocalyptic number.

It is an amenable number.

191837005601 is a deficient number, since it is larger than the sum of its proper divisors (1).

191837005601 is an equidigital number, since it uses as much as digits as its factorization.

191837005601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 41.

The spelling of 191837005601 in words is "one hundred ninety-one billion, eight hundred thirty-seven million, five thousand, six hundred one".