916261787 has 16 divisors (see below), whose sum is σ = 1093619712. Its totient is φ = 750578400.

The previous prime is 916261781. The next prime is 916261789. The reversal of 916261787 is 787162619.

It is a cyclic number.

It is not a de Polignac number, because 916261787 - 2¹⁶ = 916196251 is a prime.

It is a super-3 number, since 3×916261787³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (916261781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312653 + ... + 315569.

It is an arithmetic number, because the mean of its divisors is an integer number (68351232).

Almost surely, 2^916261787 is an apocalyptic number.

916261787 is a deficient number, since it is larger than the sum of its proper divisors (177357925).

916261787 is a wasteful number, since it uses less digits than its factorization.

916261787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4898.

The product of its digits is 254016, while the sum is 47.

The square root of 916261787 is about 30269.8164348580. The cubic root of 916261787 is about 971.2697393772.

The spelling of 916261787 in words is "nine hundred sixteen million, two hundred sixty-one thousand, seven hundred eighty-seven".