45840190 has 32 divisors (see below), whose sum is σ = 90357120. Its totient is φ = 16605600.

The previous prime is 45840167. The next prime is 45840199. The reversal of 45840190 is 9104854.

It is a happy number.

It is a super-2 number, since 2×45840190² = 4202646038472200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45840199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35781 + ... + 37039.

It is an arithmetic number, because the mean of its divisors is an integer number (2823660).

Almost surely, 2^45840190 is an apocalyptic number.

45840190 is a deficient number, since it is larger than the sum of its proper divisors (44516930).

45840190 is a wasteful number, since it uses less digits than its factorization.

45840190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 45840190 is about 6770.5383833193. The cubic root of 45840190 is about 357.8893731402.

The spelling of 45840190 in words is "forty-five million, eight hundred forty thousand, one hundred ninety".