4612555381 has 4 divisors (see below), whose sum is σ = 5271491872. Its totient is φ = 3953618892.

The previous prime is 4612555361. The next prime is 4612555393. The reversal of 4612555381 is 1835552164.

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 a de Polignac number, because none of the positive numbers 2^k-4612555381 is a prime.

It is a super-2 number, since 2×4612555381² = 42551334285584110322, 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 (4612555301) 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, 329468235 + ... + 329468248.

It is an arithmetic number, because the mean of its divisors is an integer number (1317872968).

Almost surely, 2^4612555381 is an apocalyptic number.

It is an amenable number.

4612555381 is a deficient number, since it is larger than the sum of its proper divisors (658936491).

4612555381 is an equidigital number, since it uses as much as digits as its factorization.

4612555381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658936490.

The product of its digits is 144000, while the sum is 40.

The square root of 4612555381 is about 67915.7962553632. The cubic root of 4612555381 is about 1664.6152328386.

The spelling of 4612555381 in words is "four billion, six hundred twelve million, five hundred fifty-five thousand, three hundred eighty-one".