2085030391 has 4 divisors (see below), whose sum is σ = 2085202000. Its totient is φ = 2084858784.

The previous prime is 2085030373. The next prime is 2085030413. The reversal of 2085030391 is 1930305802.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2085030391 - 2¹¹ = 2085028343 is a prime.

It is a super-2 number, since 2×2085030391² = 8694703462787225762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2085030361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66066 + ... + 92383.

It is an arithmetic number, because the mean of its divisors is an integer number (521300500).

Almost surely, 2^2085030391 is an apocalyptic number.

2085030391 is a deficient number, since it is larger than the sum of its proper divisors (171609).

2085030391 is a wasteful number, since it uses less digits than its factorization.

2085030391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171608.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 2085030391 is about 45662.1330097489. The cubic root of 2085030391 is about 1277.5290855469.

The spelling of 2085030391 in words is "two billion, eighty-five million, thirty thousand, three hundred ninety-one".