2780258653 has 8 divisors (see below), whose sum is σ = 2994725376. Its totient is φ = 2573590800.

The previous prime is 2780258641. The next prime is 2780258687. The reversal of 2780258653 is 3568520872.

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 a de Polignac number, because none of the positive numbers 2^k-2780258653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780250653) 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, 1948978 + ... + 1950403.

It is an arithmetic number, because the mean of its divisors is an integer number (374340672).

Almost surely, 2^2780258653 is an apocalyptic number.

2780258653 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2780258653 is a deficient number, since it is larger than the sum of its proper divisors (214466723).

2780258653 is a wasteful number, since it uses less digits than its factorization.

2780258653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899435.

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 2780258653 is about 52728.1580656863. The cubic root of 2780258653 is about 1406.1394745516.

The spelling of 2780258653 in words is "two billion, seven hundred eighty million, two hundred fifty-eight thousand, six hundred fifty-three".