45618437 has 4 divisors (see below), whose sum is σ = 45699180. Its totient is φ = 45537696.

The previous prime is 45618431. The next prime is 45618451. The reversal of 45618437 is 73481654.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8579041 + 37039396 = 2929^2 + 6086^2 .

It is a cyclic number.

It is not a de Polignac number, because 45618437 - 2¹² = 45614341 is a prime.

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 45618437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45618431) 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, 39518 + ... + 40655.

It is an arithmetic number, because the mean of its divisors is an integer number (11424795).

Almost surely, 2^45618437 is an apocalyptic number.

It is an amenable number.

45618437 is a deficient number, since it is larger than the sum of its proper divisors (80743).

45618437 is an equidigital number, since it uses as much as digits as its factorization.

45618437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80742.

The product of its digits is 80640, while the sum is 38.

The square root of 45618437 is about 6754.1422105253. The cubic root of 45618437 is about 357.3113406267.

The spelling of 45618437 in words is "forty-five million, six hundred eighteen thousand, four hundred thirty-seven".