1655149493 has 2 divisors, whose sum is σ = 1655149494. Its totient is φ = 1655149492.

The previous prime is 1655149481. The next prime is 1655149537. The reversal of 1655149493 is 3949415561.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 847566769 + 807582724 = 29113^2 + 28418^2 .

It is a cyclic number.

It is not a de Polignac number, because 1655149493 - 2¹⁶ = 1655083957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1655149423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827574746 + 827574747.

It is an arithmetic number, because the mean of its divisors is an integer number (827574747).

Almost surely, 2^1655149493 is an apocalyptic number.

It is an amenable number.

1655149493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655149493 is an equidigital number, since it uses as much as digits as its factorization.

1655149493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 47.

The square root of 1655149493 is about 40683.5285219952. The cubic root of 1655149493 is about 1182.8937626390.

The spelling of 1655149493 in words is "one billion, six hundred fifty-five million, one hundred forty-nine thousand, four hundred ninety-three".