1694140520418 has 96 divisors (see below), whose sum is σ = 3814433571312. Its totient is φ = 543042662400.

The previous prime is 1694140520407. The next prime is 1694140520441. The reversal of 1694140520418 is 8140250414961.

1694140520418 is a `hidden beast` number, since 1 + 6 + 9 + 41 + 40 + 520 + 41 + 8 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 137228016249 + 1556912504169 = 370443^2 + 1247763^2 .

It is a super-2 number, since 2×1694140520418² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15038196 + ... + 15150432.

Almost surely, 2^{1694140520418} is an apocalyptic number.

1694140520418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1694140520418 is an abundant number, since it is smaller than the sum of its proper divisors (2120293050894).

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

1694140520418 is a wasteful number, since it uses less digits than its factorization.

1694140520418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112580 (or 112577 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 1694140520418 in words is "one trillion, six hundred ninety-four billion, one hundred forty million, five hundred twenty thousand, four hundred eighteen".