1501723361 has 2 divisors, whose sum is σ = 1501723362. Its totient is φ = 1501723360.

The previous prime is 1501723309. The next prime is 1501723393. The reversal of 1501723361 is 1633271051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 822599761 + 679123600 = 28681^2 + 26060^2 .

It is a cyclic number.

It is not a de Polignac number, because 1501723361 - 2¹⁸ = 1501461217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1501723261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750861680 + 750861681.

It is an arithmetic number, because the mean of its divisors is an integer number (750861681).

Almost surely, 2^1501723361 is an apocalyptic number.

It is an amenable number.

1501723361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1501723361 is an equidigital number, since it uses as much as digits as its factorization.

1501723361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 1501723361 is about 38752.0755702195. The cubic root of 1501723361 is about 1145.1524649665.

The spelling of 1501723361 in words is "one billion, five hundred one million, seven hundred twenty-three thousand, three hundred sixty-one".