2820735381 has 4 divisors (see below), whose sum is σ = 3760980512. Its totient is φ = 1880490252.

The previous prime is 2820735347. The next prime is 2820735397. The reversal of 2820735381 is 1835370282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2820735381 - 2⁶ = 2820735317 is a prime.

It is a super-2 number, since 2×2820735381² = 15913096179250430322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820735301) 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, 470122561 + ... + 470122566.

It is an arithmetic number, because the mean of its divisors is an integer number (940245128).

Almost surely, 2^2820735381 is an apocalyptic number.

It is an amenable number.

2820735381 is a deficient number, since it is larger than the sum of its proper divisors (940245131).

2820735381 is an equidigital number, since it uses as much as digits as its factorization.

2820735381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940245130.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 2820735381 is about 53110.5957507539. The cubic root of 2820735381 is about 1412.9304412537.

The spelling of 2820735381 in words is "two billion, eight hundred twenty million, seven hundred thirty-five thousand, three hundred eighty-one".