1216156046 has 8 divisors (see below), whose sum is σ = 2084838960. Its totient is φ = 521209728.

The previous prime is 1216156043. The next prime is 1216156121. The reversal of 1216156046 is 6406516121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216156043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43434131 + ... + 43434158.

It is an arithmetic number, because the mean of its divisors is an integer number (260604870).

Almost surely, 2^1216156046 is an apocalyptic number.

1216156046 is a deficient number, since it is larger than the sum of its proper divisors (868682914).

1216156046 is an equidigital number, since it uses as much as digits as its factorization.

1216156046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86868298.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1216156046 is about 34873.4289395236. The cubic root of 1216156046 is about 1067.4063147074.

The spelling of 1216156046 in words is "one billion, two hundred sixteen million, one hundred fifty-six thousand, forty-six".