1927149853 has 2 divisors, whose sum is σ = 1927149854. Its totient is φ = 1927149852.

The previous prime is 1927149839. The next prime is 1927149871. The reversal of 1927149853 is 3589417291.

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., 1039288644 + 887861209 = 32238^2 + 29797^2 .

It is a cyclic number.

It is not a de Polignac number, because 1927149853 - 2²⁵ = 1893595421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1927149797 and 1927149806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1927149823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 963574926 + 963574927.

It is an arithmetic number, because the mean of its divisors is an integer number (963574927).

Almost surely, 2^1927149853 is an apocalyptic number.

It is an amenable number.

1927149853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1927149853 is an equidigital number, since it uses as much as digits as its factorization.

1927149853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 49.

The square root of 1927149853 is about 43899.3149490969. The cubic root of 1927149853 is about 1244.4338868025.

The spelling of 1927149853 in words is "one billion, nine hundred twenty-seven million, one hundred forty-nine thousand, eight hundred fifty-three".