2746782121 has 4 divisors (see below), whose sum is σ = 2746988244. Its totient is φ = 2746576000.

The previous prime is 2746782113. The next prime is 2746782133. The reversal of 2746782121 is 1212876472.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20793600 + 2725988521 = 4560^2 + 52211^2 .

It is a cyclic number.

It is not a de Polignac number, because 2746782121 - 2³ = 2746782113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2746782721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81580 + ... + 110221.

It is an arithmetic number, because the mean of its divisors is an integer number (686747061).

Almost surely, 2^2746782121 is an apocalyptic number.

It is an amenable number.

2746782121 is a deficient number, since it is larger than the sum of its proper divisors (206123).

2746782121 is a wasteful number, since it uses less digits than its factorization.

2746782121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206122.

The product of its digits is 75264, while the sum is 40.

The square root of 2746782121 is about 52409.7521554911. The cubic root of 2746782121 is about 1400.4729900123.

The spelling of 2746782121 in words is "two billion, seven hundred forty-six million, seven hundred eighty-two thousand, one hundred twenty-one".