2215651494 has 16 divisors (see below), whose sum is σ = 5064346368. Its totient is φ = 633043272.

The previous prime is 2215651483. The next prime is 2215651517. The reversal of 2215651494 is 4941565122.

It is a super-2 number, since 2×2215651494² = 9818223085728864072, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 26376762 + ... + 26376845.

It is an arithmetic number, because the mean of its divisors is an integer number (316521648).

Almost surely, 2^2215651494 is an apocalyptic number.

2215651494 is an abundant number, since it is smaller than the sum of its proper divisors (2848694874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2215651494 is a wasteful number, since it uses less digits than its factorization.

2215651494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52753619.

The product of its digits is 86400, while the sum is 39.

The square root of 2215651494 is about 47070.7073879286. The cubic root of 2215651494 is about 1303.6684340708.

The spelling of 2215651494 in words is "two billion, two hundred fifteen million, six hundred fifty-one thousand, four hundred ninety-four".