4537451861 has 8 divisors (see below), whose sum is σ = 4805184384. Its totient is φ = 4269810880.

The previous prime is 4537451851. The next prime is 4537451873. The reversal of 4537451861 is 1681547354.

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

It is a cyclic number.

It is not a de Polignac number, because 4537451861 - 2⁶ = 4537451797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4537451801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97226 + ... + 136116.

It is an arithmetic number, because the mean of its divisors is an integer number (600648048).

Almost surely, 2^4537451861 is an apocalyptic number.

4537451861 is the 38891-st octagonal number.

It is an amenable number.

4537451861 is a deficient number, since it is larger than the sum of its proper divisors (267732523).

4537451861 is a wasteful number, since it uses less digits than its factorization.

4537451861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45771.

The product of its digits is 403200, while the sum is 44.

The square root of 4537451861 is about 67360.6106044178. The cubic root of 4537451861 is about 1655.5310996174.

The spelling of 4537451861 in words is "four billion, five hundred thirty-seven million, four hundred fifty-one thousand, eight hundred sixty-one".