1018215442 has 8 divisors (see below), whose sum is σ = 1617165756. Its totient is φ = 479160192.

The previous prime is 1018215421. The next prime is 1018215467. The reversal of 1018215442 is 2445128101.

It can be written as a sum of positive squares in 2 ways, for example, as 1009269361 + 8946081 = 31769^2 + 2991^2 .

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

It is a super-3 number, since 3×1018215442³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1018215442.

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, 14973723 + ... + 14973790.

Almost surely, 2^1018215442 is an apocalyptic number.

1018215442 is a deficient number, since it is larger than the sum of its proper divisors (598950314).

1018215442 is a wasteful number, since it uses less digits than its factorization.

1018215442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29947532.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 1018215442 is about 31909.4882754331. The cubic root of 1018215442 is about 1006.0353156857.

The spelling of 1018215442 in words is "one billion, eighteen million, two hundred fifteen thousand, four hundred forty-two".