18142522 has 8 divisors (see below), whose sum is σ = 27240372. Its totient is φ = 9062400.

The previous prime is 18142513. The next prime is 18142567. The reversal of 18142522 is 22524181.

It can be written as a sum of positive squares in 2 ways, for example, as 16008001 + 2134521 = 4001^2 + 1461^2 .

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

It is a super-2 number, since 2×18142522² = 658302209040968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1479 + ... + 6202.

Almost surely, 2^18142522 is an apocalyptic number.

18142522 is a deficient number, since it is larger than the sum of its proper divisors (9097850).

18142522 is a wasteful number, since it uses less digits than its factorization.

18142522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8864.

The product of its digits is 1280, while the sum is 25.

The square root of 18142522 is about 4259.4039489112. The cubic root of 18142522 is about 262.7640131364.

The spelling of 18142522 in words is "eighteen million, one hundred forty-two thousand, five hundred twenty-two".