2159405387 has 2 divisors, whose sum is σ = 2159405388. Its totient is φ = 2159405386.

The previous prime is 2159405383. The next prime is 2159405401. The reversal of 2159405387 is 7835049512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2159405387 - 2² = 2159405383 is a prime.

It is not a weakly prime, because it can be changed into another prime (2159405383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079702693 + 1079702694.

It is an arithmetic number, because the mean of its divisors is an integer number (1079702694).

Almost surely, 2^2159405387 is an apocalyptic number.

2159405387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2159405387 is an equidigital number, since it uses as much as digits as its factorization.

2159405387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 2159405387 is about 46469.4026968284. The cubic root of 2159405387 is about 1292.5421869410.

The spelling of 2159405387 in words is "two billion, one hundred fifty-nine million, four hundred five thousand, three hundred eighty-seven".