1216940926 has 16 divisors (see below), whose sum is σ = 1876352688. Its totient is φ = 591592000.

The previous prime is 1216940843. The next prime is 1216940927. The reversal of 1216940926 is 6290496121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216940927) 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, 1300 + ... + 49351.

It is an arithmetic number, because the mean of its divisors is an integer number (117272043).

Almost surely, 2^1216940926 is an apocalyptic number.

1216940926 is a deficient number, since it is larger than the sum of its proper divisors (659411762).

1216940926 is a wasteful number, since it uses less digits than its factorization.

1216940926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50987.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 1216940926 is about 34884.6803912548. The cubic root of 1216940926 is about 1067.6358920729.

The spelling of 1216940926 in words is "one billion, two hundred sixteen million, nine hundred forty thousand, nine hundred twenty-six".