1690489351386 has 224 divisors, whose sum is σ = 4185273628800. Its totient is φ = 507621479040.

The previous prime is 1690489351381. The next prime is 1690489351403. The reversal of 1690489351386 is 6831539840961.

1690489351386 is a `hidden beast` number, since 1 + 6 + 90 + 489 + 35 + 1 + 38 + 6 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1690489351381) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 1281644035 + ... + 1281645353.

Almost surely, 2^{1690489351386} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1690489351386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2092636814400).

1690489351386 is an abundant number, since it is smaller than the sum of its proper divisors (2494784277414).

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

1690489351386 is a wasteful number, since it uses less digits than its factorization.

1690489351386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016 (or 2001 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 63.

The spelling of 1690489351386 in words is "one trillion, six hundred ninety billion, four hundred eighty-nine million, three hundred fifty-one thousand, three hundred eighty-six".