1774431401 has 2 divisors, whose sum is σ = 1774431402. Its totient is φ = 1774431400.

The previous prime is 1774431377. The next prime is 1774431419. The reversal of 1774431401 is 1041344771.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1774431376 + 25 = 42124^2 + 5^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1774431401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1774431481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 887215700 + 887215701.

It is an arithmetic number, because the mean of its divisors is an integer number (887215701).

Almost surely, 2^1774431401 is an apocalyptic number.

It is an amenable number.

1774431401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1774431401 is an equidigital number, since it uses as much as digits as its factorization.

1774431401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 1774431401 is about 42124.0002967429. Note that the first 3 decimals coincide. The cubic root of 1774431401 is about 1210.6531548670.

The spelling of 1774431401 in words is "one billion, seven hundred seventy-four million, four hundred thirty-one thousand, four hundred one".