2015560990 has 16 divisors (see below), whose sum is σ = 3641809248. Its totient is φ = 803157856.

The previous prime is 2015560979. The next prime is 2015560991. The reversal of 2015560990 is 990655102.

It is a super-2 number, since 2×2015560990² = 8124972208819560200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015560991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380557 + ... + 385816.

It is an arithmetic number, because the mean of its divisors is an integer number (227613078).

Almost surely, 2^2015560990 is an apocalyptic number.

2015560990 is a deficient number, since it is larger than the sum of its proper divisors (1626248258).

2015560990 is a wasteful number, since it uses less digits than its factorization.

2015560990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766643.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 2015560990 is about 44894.9996102016. Note that the first 3 decimals coincide. The cubic root of 2015560990 is about 1263.1802149568.

The spelling of 2015560990 in words is "two billion, fifteen million, five hundred sixty thousand, nine hundred ninety".