1699816669090 has 8 divisors (see below), whose sum is σ = 3059670004380. Its totient is φ = 679926667632.

The previous prime is 1699816669079. The next prime is 1699816669091. The reversal of 1699816669090 is 909666189961.

It can be written as a sum of positive squares in 2 ways, for example, as 1601588960521 + 98227708569 = 1265539^2 + 313413^2 .

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

It is a super-2 number, since 2×1699816669090² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1699816669091) 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, 84990833445 + ... + 84990833464.

Almost surely, 2^{1699816669090} is an apocalyptic number.

1699816669090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1699816669090 is a deficient number, since it is larger than the sum of its proper divisors (1359853335290).

1699816669090 is a wasteful number, since it uses less digits than its factorization.

1699816669090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169981666916.

The product of its (nonzero) digits is 68024448, while the sum is 70.

The spelling of 1699816669090 in words is "one trillion, six hundred ninety-nine billion, eight hundred sixteen million, six hundred sixty-nine thousand, ninety".