2015191942 has 16 divisors (see below), whose sum is σ = 3045715200. Its totient is φ = 999966600.

The previous prime is 2015191909. The next prime is 2015191949. The reversal of 2015191942 is 2491915102.

It is a junction number, because it is equal to n+sod(n) for n = 2015191898 and 2015191907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015191949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395809 + ... + 400867.

It is an arithmetic number, because the mean of its divisors is an integer number (190357200).

Almost surely, 2^2015191942 is an apocalyptic number.

2015191942 is a deficient number, since it is larger than the sum of its proper divisors (1030523258).

2015191942 is a wasteful number, since it uses less digits than its factorization.

2015191942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6531.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 2015191942 is about 44890.8892983866. The cubic root of 2015191942 is about 1263.1031144061.

The spelling of 2015191942 in words is "two billion, fifteen million, one hundred ninety-one thousand, nine hundred forty-two".