216949942190 has 16 divisors (see below), whose sum is σ = 411063048720. Its totient is φ = 82212609600.

The previous prime is 216949942159. The next prime is 216949942211. The reversal of 216949942190 is 91249949612.

It is a super-2 number, since 2×216949942190² (a number of 23 digits) contains 22 as substring.

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, 570920711 + ... + 570921090.

It is an arithmetic number, because the mean of its divisors is an integer number (25691440545).

Almost surely, 2^216949942190 is an apocalyptic number.

216949942190 is a deficient number, since it is larger than the sum of its proper divisors (194113106530).

216949942190 is a wasteful number, since it uses less digits than its factorization.

216949942190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141841827.

The product of its (nonzero) digits is 2519424, while the sum is 56.

The spelling of 216949942190 in words is "two hundred sixteen billion, nine hundred forty-nine million, nine hundred forty-two thousand, one hundred ninety".