1216474807 has 8 divisors (see below), whose sum is σ = 1270270080. Its totient is φ = 1162755000.

The previous prime is 1216474801. The next prime is 1216474837. The reversal of 1216474807 is 7084746121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1216474807 - 2²⁷ = 1082257079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1216474807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216474801) 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, 15432 + ... + 51682.

It is an arithmetic number, because the mean of its divisors is an integer number (158783760).

Almost surely, 2^1216474807 is an apocalyptic number.

1216474807 is a deficient number, since it is larger than the sum of its proper divisors (53795273).

1216474807 is a wasteful number, since it uses less digits than its factorization.

1216474807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37733.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 1216474807 is about 34877.9988961523. The cubic root of 1216474807 is about 1067.4995641942.

The spelling of 1216474807 in words is "one billion, two hundred sixteen million, four hundred seventy-four thousand, eight hundred seven".