190421418 has 16 divisors (see below), whose sum is σ = 415465056. Its totient is φ = 57703440.

The previous prime is 190421417. The next prime is 190421423. The reversal of 190421418 is 814124091.

It is not an unprimeable number, because it can be changed into a prime (190421411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1442521 + ... + 1442652.

It is an arithmetic number, because the mean of its divisors is an integer number (25966566).

Almost surely, 2^190421418 is an apocalyptic number.

190421418 is an abundant number, since it is smaller than the sum of its proper divisors (225043638).

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

190421418 is a wasteful number, since it uses less digits than its factorization.

190421418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885189.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 190421418 is about 13799.3267227064. The cubic root of 190421418 is about 575.3144271484.

The spelling of 190421418 in words is "one hundred ninety million, four hundred twenty-one thousand, four hundred eighteen".