1497664361 has 2 divisors, whose sum is σ = 1497664362. Its totient is φ = 1497664360.

The previous prime is 1497664309. The next prime is 1497664381. The reversal of 1497664361 is 1634667941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1493358736 + 4305625 = 38644^2 + 2075^2 .

It is a cyclic number.

It is not a de Polignac number, because 1497664361 - 2²² = 1493470057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1497664381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 748832180 + 748832181.

It is an arithmetic number, because the mean of its divisors is an integer number (748832181).

Almost surely, 2^1497664361 is an apocalyptic number.

It is an amenable number.

1497664361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1497664361 is an equidigital number, since it uses as much as digits as its factorization.

1497664361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The square root of 1497664361 is about 38699.6687453523. The cubic root of 1497664361 is about 1144.1197918574.

The spelling of 1497664361 in words is "one billion, four hundred ninety-seven million, six hundred sixty-four thousand, three hundred sixty-one".