1618085421724 has 6 divisors (see below), whose sum is σ = 2831649488024. Its totient is φ = 809042710860.

The previous prime is 1618085421721. The next prime is 1618085421739. The reversal of 1618085421724 is 4271245808161.

It is a super-3 number, since 3×1618085421724³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1618085421721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202260677712 + ... + 202260677719.

Almost surely, 2^{1618085421724} is an apocalyptic number.

It is an amenable number.

1618085421724 is a deficient number, since it is larger than the sum of its proper divisors (1213564066300).

1618085421724 is a wasteful number, since it uses less digits than its factorization.

1618085421724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404521355435 (or 404521355433 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 1618085421724 in words is "one trillion, six hundred eighteen billion, eighty-five million, four hundred twenty-one thousand, seven hundred twenty-four".