1914556321 has 2 divisors, whose sum is σ = 1914556322. Its totient is φ = 1914556320.

The previous prime is 1914556283. The next prime is 1914556339. The reversal of 1914556321 is 1236554191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1800814096 + 113742225 = 42436^2 + 10665^2 .

It is a cyclic number.

It is not a de Polignac number, because 1914556321 - 2²¹ = 1912459169 is a prime.

It is not a weakly prime, because it can be changed into another prime (1914556361) 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, 957278160 + 957278161.

It is an arithmetic number, because the mean of its divisors is an integer number (957278161).

Almost surely, 2^1914556321 is an apocalyptic number.

It is an amenable number.

1914556321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1914556321 is an equidigital number, since it uses as much as digits as its factorization.

1914556321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 37.

The square root of 1914556321 is about 43755.6433046070. The cubic root of 1914556321 is about 1241.7172532539.

It can be divided in two parts, 19145 and 56321, that added together give a triangular number (75466 = T₃₈₈).

The spelling of 1914556321 in words is "one billion, nine hundred fourteen million, five hundred fifty-six thousand, three hundred twenty-one".