45819181 has 8 divisors (see below), whose sum is σ = 47190528. Its totient is φ = 44460000.

The previous prime is 45819173. The next prime is 45819227. The reversal of 45819181 is 18191854.

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 45819181 - 2³ = 45819173 is a prime.

It is a super-2 number, since 2×45819181² = 4198794695021522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45819181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45819121) 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, 4906 + ... + 10756.

It is an arithmetic number, because the mean of its divisors is an integer number (5898816).

Almost surely, 2^45819181 is an apocalyptic number.

45819181 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

45819181 is a deficient number, since it is larger than the sum of its proper divisors (1371347).

45819181 is a wasteful number, since it uses less digits than its factorization.

45819181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6083.

The product of its digits is 11520, while the sum is 37.

The square root of 45819181 is about 6768.9867040791. The cubic root of 45819181 is about 357.8346900714.

It can be divided in two parts, 4 and 5819181, that added together give a palindrome (5819185).

The spelling of 45819181 in words is "forty-five million, eight hundred nineteen thousand, one hundred eighty-one".