1654791361 has 2 divisors, whose sum is σ = 1654791362. Its totient is φ = 1654791360.

The previous prime is 1654791251. The next prime is 1654791371. The reversal of 1654791361 is 1631974561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1207215025 + 447576336 = 34745^2 + 21156^2 .

It is a cyclic number.

It is not a de Polignac number, because 1654791361 - 2²³ = 1646402753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1654791371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827395680 + 827395681.

It is an arithmetic number, because the mean of its divisors is an integer number (827395681).

Almost surely, 2^1654791361 is an apocalyptic number.

It is an amenable number.

1654791361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1654791361 is an equidigital number, since it uses as much as digits as its factorization.

1654791361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 43.

The square root of 1654791361 is about 40679.1268465782. The cubic root of 1654791361 is about 1182.8084405037.

The spelling of 1654791361 in words is "one billion, six hundred fifty-four million, seven hundred ninety-one thousand, three hundred sixty-one".