185101909049 has 2 divisors, whose sum is σ = 185101909050. Its totient is φ = 185101909048.

The previous prime is 185101908973. The next prime is 185101909073. The reversal of 185101909049 is 940909101581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113253787024 + 71848122025 = 336532^2 + 268045^2 .

It is a cyclic number.

It is not a de Polignac number, because 185101909049 - 2⁸ = 185101908793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 185101908994 and 185101909012.

It is not a weakly prime, because it can be changed into another prime (185101909099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92550954524 + 92550954525.

It is an arithmetic number, because the mean of its divisors is an integer number (92550954525).

Almost surely, 2^185101909049 is an apocalyptic number.

It is an amenable number.

185101909049 is a deficient number, since it is larger than the sum of its proper divisors (1).

185101909049 is an equidigital number, since it uses as much as digits as its factorization.

185101909049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 47.

The spelling of 185101909049 in words is "one hundred eighty-five billion, one hundred one million, nine hundred nine thousand, forty-nine".