1535890001 has 2 divisors, whose sum is σ = 1535890002. Its totient is φ = 1535890000.

The previous prime is 1535889937. The next prime is 1535890003. The reversal of 1535890001 is 1000985351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1345422400 + 190467601 = 36680^2 + 13801^2 .

It is a cyclic number.

It is not a de Polignac number, because 1535890001 - 2⁶ = 1535889937 is a prime.

Together with 1535890003, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1535890001.

It is not a weakly prime, because it can be changed into another prime (1535890003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767945000 + 767945001.

It is an arithmetic number, because the mean of its divisors is an integer number (767945001).

Almost surely, 2^1535890001 is an apocalyptic number.

It is an amenable number.

1535890001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1535890001 is an equidigital number, since it uses as much as digits as its factorization.

1535890001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 1535890001 is about 39190.4325186646. The cubic root of 1535890001 is about 1153.7721128783.

The spelling of 1535890001 in words is "one billion, five hundred thirty-five million, eight hundred ninety thousand, one".