1959085389 has 16 divisors (see below), whose sum is σ = 2781767232. Its totient is φ = 1222119168.

The previous prime is 1959085319. The next prime is 1959085391. The reversal of 1959085389 is 9835809591.

It is not a de Polignac number, because 1959085389 - 2¹⁷ = 1958954317 is a prime.

It is a super-2 number, since 2×1959085389² = 7676031122786562642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1959085309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102199 + ... + 119844.

It is an arithmetic number, because the mean of its divisors is an integer number (173860452).

Almost surely, 2^1959085389 is an apocalyptic number.

It is an amenable number.

1959085389 is a deficient number, since it is larger than the sum of its proper divisors (822681843).

1959085389 is a wasteful number, since it uses less digits than its factorization.

1959085389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222236.

The product of its (nonzero) digits is 3499200, while the sum is 57.

The square root of 1959085389 is about 44261.5565587113. The cubic root of 1959085389 is about 1251.2702583710.

The spelling of 1959085389 in words is "one billion, nine hundred fifty-nine million, eighty-five thousand, three hundred eighty-nine".