2420741581 has 4 divisors (see below), whose sum is σ = 2421130752. Its totient is φ = 2420352412.

The previous prime is 2420741567. The next prime is 2420741591. The reversal of 2420741581 is 1851470242.

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 a cyclic number.

It is not a de Polignac number, because 2420741581 - 2⁵ = 2420741549 is a prime.

It is a super-2 number, since 2×2420741581² = 11719979603964759122, 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 (2420741501) 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, 185101 + ... + 197746.

It is an arithmetic number, because the mean of its divisors is an integer number (605282688).

Almost surely, 2^2420741581 is an apocalyptic number.

It is an amenable number.

2420741581 is a deficient number, since it is larger than the sum of its proper divisors (389171).

2420741581 is an equidigital number, since it uses as much as digits as its factorization.

2420741581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389170.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 2420741581 is about 49201.0323164057. The cubic root of 2420741581 is about 1342.7118137380.

The spelling of 2420741581 in words is "two billion, four hundred twenty million, seven hundred forty-one thousand, five hundred eighty-one".