2916350721 has 6 divisors (see below), whose sum is σ = 4212506610. Its totient is φ = 1944233808.

The previous prime is 2916350719. The next prime is 2916350729. The reversal of 2916350721 is 1270536192.

2916350721 is a `hidden beast` number, since 2 + 91 + 63 + 507 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2546211600 + 370139121 = 50460^2 + 19239^2 .

It is not a de Polignac number, because 2916350721 - 2¹ = 2916350719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2916350729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 162019476 + ... + 162019493.

It is an arithmetic number, because the mean of its divisors is an integer number (702084435).

Almost surely, 2^2916350721 is an apocalyptic number.

It is an amenable number.

2916350721 is a deficient number, since it is larger than the sum of its proper divisors (1296155889).

2916350721 is a wasteful number, since it uses less digits than its factorization.

2916350721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324038975 (or 324038972 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 2916350721 is about 54003.2473190270. The cubic root of 2916350721 is about 1428.7182217267.

The spelling of 2916350721 in words is "two billion, nine hundred sixteen million, three hundred fifty thousand, seven hundred twenty-one".