4149981045 has 48 divisors (see below), whose sum is σ = 8653607040. Its totient is φ = 1797282432.

The previous prime is 4149981019. The next prime is 4149981047. The reversal of 4149981045 is 5401899414.

It is a happy number.

4149981045 is a `hidden beast` number, since 41 + 499 + 81 + 0 + 45 = 666.

It is not a de Polignac number, because 4149981045 - 2²³ = 4141592437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4149981047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 340714 + ... + 352683.

It is an arithmetic number, because the mean of its divisors is an integer number (180283480).

Almost surely, 2^4149981045 is an apocalyptic number.

4149981045 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4149981045 is an abundant number, since it is smaller than the sum of its proper divisors (4503625995).

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

4149981045 is a wasteful number, since it uses less digits than its factorization.

4149981045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693434 (or 693431 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 4149981045 is about 64420.3465141255. The cubic root of 4149981045 is about 1606.9981286475.

The spelling of 4149981045 in words is "four billion, one hundred forty-nine million, nine hundred eighty-one thousand, forty-five".