45781518 has 8 divisors (see below), whose sum is σ = 91563048. Its totient is φ = 15260504.

The previous prime is 45781481. The next prime is 45781529. The reversal of 45781518 is 81518754.

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

45781518 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3815121 + ... + 3815132.

It is an arithmetic number, because the mean of its divisors is an integer number (11445381).

Almost surely, 2^45781518 is an apocalyptic number.

45781518 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45781518 is a wasteful number, since it uses less digits than its factorization.

45781518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7630258.

The product of its digits is 44800, while the sum is 39.

The square root of 45781518 is about 6766.2041057006. The cubic root of 45781518 is about 357.7366174446.

The spelling of 45781518 in words is "forty-five million, seven hundred eighty-one thousand, five hundred eighteen".