1522221898 has 16 divisors (see below), whose sum is σ = 2404357920. Its totient is φ = 720797616.

The previous prime is 1522221893. The next prime is 1522221937. The reversal of 1522221898 is 8981222251.

It is a self number, because there is not a number n which added to its sum of digits gives 1522221898.

It is not an unprimeable number, because it can be changed into a prime (1522221893) 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, 143340 + ... + 153592.

It is an arithmetic number, because the mean of its divisors is an integer number (150272370).

Almost surely, 2^1522221898 is an apocalyptic number.

1522221898 is a deficient number, since it is larger than the sum of its proper divisors (882136022).

1522221898 is a wasteful number, since it uses less digits than its factorization.

1522221898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14181.

The product of its digits is 46080, while the sum is 40.

The square root of 1522221898 is about 39015.6622140391. The cubic root of 1522221898 is about 1150.3393826309.

The spelling of 1522221898 in words is "one billion, five hundred twenty-two million, two hundred twenty-one thousand, eight hundred ninety-eight".