1501428689 has 2 divisors, whose sum is σ = 1501428690. Its totient is φ = 1501428688.

The previous prime is 1501428623. The next prime is 1501428701. The reversal of 1501428689 is 9868241051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1275918400 + 225510289 = 35720^2 + 15017^2 .

It is a cyclic number.

It is not a de Polignac number, because 1501428689 - 2¹⁶ = 1501363153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1501428619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750714344 + 750714345.

It is an arithmetic number, because the mean of its divisors is an integer number (750714345).

Almost surely, 2^1501428689 is an apocalyptic number.

It is an amenable number.

1501428689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1501428689 is an equidigital number, since it uses as much as digits as its factorization.

1501428689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 1501428689 is about 38748.2733679838. The cubic root of 1501428689 is about 1145.0775584846.

The spelling of 1501428689 in words is "one billion, five hundred one million, four hundred twenty-eight thousand, six hundred eighty-nine".