2215442990 has 32 divisors (see below), whose sum is σ = 4088430720. Its totient is φ = 863894304.

The previous prime is 2215442951. The next prime is 2215443031. The reversal of 2215442990 is 992445122.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230501 + ... + 239919.

It is an arithmetic number, because the mean of its divisors is an integer number (127763460).

Almost surely, 2^2215442990 is an apocalyptic number.

2215442990 is a deficient number, since it is larger than the sum of its proper divisors (1872987730).

2215442990 is a wasteful number, since it uses less digits than its factorization.

2215442990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10016.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 2215442990 is about 47068.4925401271. The cubic root of 2215442990 is about 1303.6275388592.

It can be divided in two parts, 2215 and 442990, that multiplied together give a triangular number (981222850 = T₄₄₂₉₉).

The spelling of 2215442990 in words is "two billion, two hundred fifteen million, four hundred forty-two thousand, nine hundred ninety".