1402940218 has 8 divisors (see below), whose sum is σ = 2105319348. Its totient is φ = 701167104.

The previous prime is 1402940129. The next prime is 1402940219. The reversal of 1402940218 is 8120492041.

It can be written as a sum of positive squares in 2 ways, for example, as 1365080809 + 37859409 = 36947^2 + 6153^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1402940218.

It is not an unprimeable number, because it can be changed into a prime (1402940219) 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, 145671 + ... + 155002.

Almost surely, 2^1402940218 is an apocalyptic number.

1402940218 is a deficient number, since it is larger than the sum of its proper divisors (702379130).

1402940218 is a wasteful number, since it uses less digits than its factorization.

1402940218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303008.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1402940218 is about 37455.8435761364. The cubic root of 1402940218 is about 1119.4715348060.

The spelling of 1402940218 in words is "one billion, four hundred two million, nine hundred forty thousand, two hundred eighteen".