2758820465 has 8 divisors (see below), whose sum is σ = 3364856808. Its totient is φ = 2170874880.

The previous prime is 2758820459. The next prime is 2758820497. The reversal of 2758820465 is 5640288572.

It can be written as a sum of positive squares in 4 ways, for example, as 126720049 + 2632100416 = 11257^2 + 51304^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-2758820465 is a prime.

It is a super-2 number, since 2×2758820465² = 15222180716205632450, which contains 22 as substring.

It is a Duffinian number.

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, 4522352 + ... + 4522961.

It is an arithmetic number, because the mean of its divisors is an integer number (420607101).

Almost surely, 2^2758820465 is an apocalyptic number.

It is an amenable number.

2758820465 is a deficient number, since it is larger than the sum of its proper divisors (606036343).

2758820465 is an equidigital number, since it uses as much as digits as its factorization.

2758820465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9045379.

The product of its (nonzero) digits is 1075200, while the sum is 47.

The square root of 2758820465 is about 52524.4749140817. The cubic root of 2758820465 is about 1402.5159630577.

The spelling of 2758820465 in words is "two billion, seven hundred fifty-eight million, eight hundred twenty thousand, four hundred sixty-five".