1618402416 has 40 divisors (see below), whose sum is σ = 4196000784. Its totient is φ = 537515520.

The previous prime is 1618402403. The next prime is 1618402421. The reversal of 1618402416 is 6142048161.

It is a super-2 number, since 2×1618402416² = 5238452760229274112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47565 + ... + 74156.

Almost surely, 2^1618402416 is an apocalyptic number.

1618402416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1618402416 is an abundant number, since it is smaller than the sum of its proper divisors (2577598368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1618402416 is a wasteful number, since it uses less digits than its factorization.

1618402416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122009 (or 122003 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1618402416 is about 40229.3725528997. The cubic root of 1618402416 is about 1174.0740956246.

The spelling of 1618402416 in words is "one billion, six hundred eighteen million, four hundred two thousand, four hundred sixteen".