1216443698 has 16 divisors (see below), whose sum is σ = 1839136320. Its totient is φ = 603412656.

The previous prime is 1216443691. The next prime is 1216443743. The reversal of 1216443698 is 8963446121.

It is not an unprimeable number, because it can be changed into a prime (1216443691) 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, 184808 + ... + 191276.

It is an arithmetic number, because the mean of its divisors is an integer number (114946020).

Almost surely, 2^1216443698 is an apocalyptic number.

1216443698 is a deficient number, since it is larger than the sum of its proper divisors (622692622).

1216443698 is a wasteful number, since it uses less digits than its factorization.

1216443698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7201.

The product of its digits is 248832, while the sum is 44.

The square root of 1216443698 is about 34877.5529244814. The cubic root of 1216443698 is about 1067.4904643683.

The spelling of 1216443698 in words is "one billion, two hundred sixteen million, four hundred forty-three thousand, six hundred ninety-eight".