4540261621 has 8 divisors (see below), whose sum is σ = 5494098240. Its totient is φ = 3662731968.

The previous prime is 4540261619. The next prime is 4540261631. The reversal of 4540261621 is 1261620454.

It is a happy number.

4540261621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4540261621 - 2¹ = 4540261619 is a prime.

It is a super-2 number, since 2×4540261621² = 41227951174251095282, 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 (4540261631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19076611 + ... + 19076848.

It is an arithmetic number, because the mean of its divisors is an integer number (686762280).

Almost surely, 2^4540261621 is an apocalyptic number.

It is an amenable number.

4540261621 is a deficient number, since it is larger than the sum of its proper divisors (953836619).

4540261621 is a wasteful number, since it uses less digits than its factorization.

4540261621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38153483.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 4540261621 is about 67381.4634821774. The cubic root of 4540261621 is about 1655.8727513768.

The spelling of 4540261621 in words is "four billion, five hundred forty million, two hundred sixty-one thousand, six hundred twenty-one".