45681898 has 4 divisors (see below), whose sum is σ = 68522850. Its totient is φ = 22840948.

The previous prime is 45681847. The next prime is 45681917. The reversal of 45681898 is 89818654.

45681898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89818654 = 2 ⋅44909327.

It can be written as a sum of positive squares in only one way, i.e., 44930209 + 751689 = 6703^2 + 867^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11420473 + ... + 11420476.

Almost surely, 2^45681898 is an apocalyptic number.

45681898 is a deficient number, since it is larger than the sum of its proper divisors (22840952).

45681898 is a wasteful number, since it uses less digits than its factorization.

45681898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22840951.

The product of its digits is 552960, while the sum is 49.

The square root of 45681898 is about 6758.8385096849. The cubic root of 45681898 is about 357.4769522364.

The spelling of 45681898 in words is "forty-five million, six hundred eighty-one thousand, eight hundred ninety-eight".