1855148677 has 2 divisors, whose sum is σ = 1855148678. Its totient is φ = 1855148676.

The previous prime is 1855148671. The next prime is 1855148683. The reversal of 1855148677 is 7768415581.

It is a balanced prime because it is at equal distance from previous prime (1855148671) and next prime (1855148683).

It can be written as a sum of positive squares in only one way, i.e., 1855111041 + 37636 = 43071^2 + 194^2 .

It is a cyclic number.

It is not a de Polignac number, because 1855148677 - 2¹⁵ = 1855115909 is a prime.

It is a super-2 number, since 2×1855148677² = 6883153227549700658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1855148671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 927574338 + 927574339.

It is an arithmetic number, because the mean of its divisors is an integer number (927574339).

Almost surely, 2^1855148677 is an apocalyptic number.

It is an amenable number.

1855148677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1855148677 is an equidigital number, since it uses as much as digits as its factorization.

1855148677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1881600, while the sum is 52.

The square root of 1855148677 is about 43071.4369042873. The cubic root of 1855148677 is about 1228.7388039825.

The spelling of 1855148677 in words is "one billion, eight hundred fifty-five million, one hundred forty-eight thousand, six hundred seventy-seven".