611000149 has 2 divisors, whose sum is σ = 611000150. Its totient is φ = 611000148.

The previous prime is 611000147. The next prime is 611000161. The reversal of 611000149 is 941000116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 581677924 + 29322225 = 24118^2 + 5415^2 .

It is a cyclic number.

It is not a de Polignac number, because 611000149 - 2¹ = 611000147 is a prime.

Together with 611000147, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611000147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305500074 + 305500075.

It is an arithmetic number, because the mean of its divisors is an integer number (305500075).

Almost surely, 2^611000149 is an apocalyptic number.

It is an amenable number.

611000149 is a deficient number, since it is larger than the sum of its proper divisors (1).

611000149 is an equidigital number, since it uses as much as digits as its factorization.

611000149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 611000149 is about 24718.4172025638. The cubic root of 611000149 is about 848.5558633951. Note that the first 3 decimals are identical.

The spelling of 611000149 in words is "six hundred eleven million, one hundred forty-nine", and thus it is an aban number.