2920840465 has 8 divisors (see below), whose sum is σ = 3711185640. Its totient is φ = 2199220992.

The previous prime is 2920840423. The next prime is 2920840501. The reversal of 2920840465 is 5640480292.

It can be written as a sum of positive squares in 4 ways, for example, as 785568784 + 2135271681 = 28028^2 + 46209^2 .

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 2920840465 - 2⁷ = 2920840337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17181330 + ... + 17181499.

It is an arithmetic number, because the mean of its divisors is an integer number (463898205).

Almost surely, 2^2920840465 is an apocalyptic number.

It is an amenable number.

2920840465 is a deficient number, since it is larger than the sum of its proper divisors (790345175).

2920840465 is a wasteful number, since it uses less digits than its factorization.

2920840465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34362851.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 2920840465 is about 54044.8005362218. The cubic root of 2920840465 is about 1429.4510199764.

The spelling of 2920840465 in words is "two billion, nine hundred twenty million, eight hundred forty thousand, four hundred sixty-five".