1655655149 has 2 divisors, whose sum is σ = 1655655150. Its totient is φ = 1655655148.

The previous prime is 1655655137. The next prime is 1655655247. The reversal of 1655655149 is 9415565561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1318198249 + 337456900 = 36307^2 + 18370^2 .

It is an emirp because it is prime and its reverse (9415565561) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1655655149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1655685149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827827574 + 827827575.

It is an arithmetic number, because the mean of its divisors is an integer number (827827575).

Almost surely, 2^1655655149 is an apocalyptic number.

It is an amenable number.

1655655149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655655149 is an equidigital number, since it uses as much as digits as its factorization.

1655655149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810000, while the sum is 47.

The square root of 1655655149 is about 40689.7425526385. The cubic root of 1655655149 is about 1183.0142102542.

The spelling of 1655655149 in words is "one billion, six hundred fifty-five million, six hundred fifty-five thousand, one hundred forty-nine".