2015870401 has 6 divisors (see below), whose sum is σ = 2063843250. Its totient is φ = 1968987888.

The previous prime is 2015870383. The next prime is 2015870419. The reversal of 2015870401 is 1040785102.

It is an interprime number because it is at equal distance from previous prime (2015870383) and next prime (2015870419).

It can be written as a sum of positive squares in only one way, i.e., 1999878400 + 15992001 = 44720^2 + 3999^2 .

It is not a de Polignac number, because 2015870401 - 2⁷ = 2015870273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2015870401.

It is not an unprimeable number, because it can be changed into a prime (2015870491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 543276 + ... + 546973.

It is an arithmetic number, because the mean of its divisors is an integer number (343973875).

Almost surely, 2^2015870401 is an apocalyptic number.

It is an amenable number.

2015870401 is a deficient number, since it is larger than the sum of its proper divisors (47972849).

2015870401 is an equidigital number, since it uses as much as digits as its factorization.

2015870401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090335 (or 1090292 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 2015870401 is about 44898.4454185220. The cubic root of 2015870401 is about 1263.2448490475.

The spelling of 2015870401 in words is "two billion, fifteen million, eight hundred seventy thousand, four hundred one".