18949522 has 8 divisors (see below), whose sum is σ = 28615500. Its totient is φ = 9411024.

The previous prime is 18949487. The next prime is 18949523. The reversal of 18949522 is 22594981.

18949522 = T₄₂₈ + T₄₂₉ + ... + T₅₇₆.

It can be written as a sum of positive squares in 2 ways, for example, as 18913801 + 35721 = 4349^2 + 189^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18949523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31497 + ... + 32092.

Almost surely, 2^18949522 is an apocalyptic number.

18949522 is a deficient number, since it is larger than the sum of its proper divisors (9665978).

18949522 is a wasteful number, since it uses less digits than its factorization.

18949522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63740.

The product of its digits is 51840, while the sum is 40.

The square root of 18949522 is about 4353.1048689412. The cubic root of 18949522 is about 266.6036472610.

The spelling of 18949522 in words is "eighteen million, nine hundred forty-nine thousand, five hundred twenty-two".