1698616816 has 40 divisors (see below), whose sum is σ = 3548217344. Its totient is φ = 783095040.

The previous prime is 1698616793. The next prime is 1698616819. The reversal of 1698616816 is 6186168961.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1698616819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203281 + ... + 211471.

Almost surely, 2^1698616816 is an apocalyptic number.

1698616816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1698616816 is an abundant number, since it is smaller than the sum of its proper divisors (1849600528).

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

1698616816 is a wasteful number, since it uses less digits than its factorization.

1698616816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9209 (or 9203 counting only the distinct ones).

The product of its digits is 746496, while the sum is 52.

The square root of 1698616816 is about 41214.2792730869. The cubic root of 1698616816 is about 1193.1594164808.

The spelling of 1698616816 in words is "one billion, six hundred ninety-eight million, six hundred sixteen thousand, eight hundred sixteen".