618353149 has 2 divisors, whose sum is σ = 618353150. Its totient is φ = 618353148.

The previous prime is 618353101. The next prime is 618353159. The reversal of 618353149 is 941353816.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 591365124 + 26988025 = 24318^2 + 5195^2 .

It is a cyclic number.

It is not a de Polignac number, because 618353149 - 2²⁹ = 81482237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618353159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309176574 + 309176575.

It is an arithmetic number, because the mean of its divisors is an integer number (309176575).

Almost surely, 2^618353149 is an apocalyptic number.

It is an amenable number.

618353149 is a deficient number, since it is larger than the sum of its proper divisors (1).

618353149 is an equidigital number, since it uses as much as digits as its factorization.

618353149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 618353149 is about 24866.7076429510. The cubic root of 618353149 is about 851.9462434031.

The spelling of 618353149 in words is "six hundred eighteen million, three hundred fifty-three thousand, one hundred forty-nine".