1927481 has 2 divisors, whose sum is σ = 1927482. Its totient is φ = 1927480.

The previous prime is 1927459. The next prime is 1927483. The reversal of 1927481 is 1847291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1401856 + 525625 = 1184^2 + 725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1927481 is a prime.

It is a super-2 number, since 2×1927481² = 7430366010722, which contains 22 as substring.

Together with 1927483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1927483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 963740 + 963741.

It is an arithmetic number, because the mean of its divisors is an integer number (963741).

2^1927481 is an apocalyptic number.

It is an amenable number.

1927481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1927481 is an equidigital number, since it uses as much as digits as its factorization.

1927481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 32.

The square root of 1927481 is about 1388.3374949918. The cubic root of 1927481 is about 124.4505160787.

The spelling of 1927481 in words is "one million, nine hundred twenty-seven thousand, four hundred eighty-one".