618709416 has 64 divisors (see below), whose sum is σ = 1672003200. Its totient is φ = 189658368.

The previous prime is 618709411. The next prime is 618709471. The reversal of 618709416 is 614907816.

It is a super-2 number, since 2×618709416² = 765602682894122112, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (618709411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82845 + ... + 90003.

It is an arithmetic number, because the mean of its divisors is an integer number (26125050).

Almost surely, 2^618709416 is an apocalyptic number.

618709416 is the 13296-th nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618709416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (836001600).

618709416 is an abundant number, since it is smaller than the sum of its proper divisors (1053293784).

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

618709416 is a wasteful number, since it uses less digits than its factorization.

618709416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7458 (or 7454 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 618709416 is about 24873.8701451945. The cubic root of 618709416 is about 852.1098295674.

The spelling of 618709416 in words is "six hundred eighteen million, seven hundred nine thousand, four hundred sixteen".