1690474025394 has 432 divisors, whose sum is σ = 5088930013440. Its totient is φ = 402540969600.

The previous prime is 1690474025393. The next prime is 1690474025407. The reversal of 1690474025394 is 4935204740961.

1690474025394 is a `hidden beast` number, since 1 + 69 + 0 + 4 + 7 + 40 + 2 + 539 + 4 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1690474025394.

It is not an unprimeable number, because it can be changed into a prime (1690474025393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 62845812 + ... + 62872704.

Almost surely, 2^{1690474025394} is an apocalyptic number.

1690474025394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1690474025394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2544465006720).

1690474025394 is an abundant number, since it is smaller than the sum of its proper divisors (3398455988046).

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

1690474025394 is a wasteful number, since it uses less digits than its factorization.

1690474025394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26987 (or 26966 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 1690474025394 in words is "one trillion, six hundred ninety billion, four hundred seventy-four million, twenty-five thousand, three hundred ninety-four".