2797653861 has 6 divisors (see below), whose sum is σ = 4041055590. Its totient is φ = 1865102568.

The previous prime is 2797653823. The next prime is 2797653863. The reversal of 2797653861 is 1683567972.

2797653861 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2390623236 + 407030625 = 48894^2 + 20175^2 .

It is not a de Polignac number, because 2797653861 - 2¹⁴ = 2797637477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2797653798 and 2797653807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2797653863) 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, 155425206 + ... + 155425223.

It is an arithmetic number, because the mean of its divisors is an integer number (673509265).

Almost surely, 2^2797653861 is an apocalyptic number.

It is an amenable number.

2797653861 is a deficient number, since it is larger than the sum of its proper divisors (1243401729).

2797653861 is a wasteful number, since it uses less digits than its factorization.

2797653861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310850435 (or 310850432 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 2797653861 is about 52892.8526457025. The cubic root of 2797653861 is about 1409.0659711149.

The spelling of 2797653861 in words is "two billion, seven hundred ninety-seven million, six hundred fifty-three thousand, eight hundred sixty-one".