3546421968 has 20 divisors (see below), whose sum is σ = 9161590208. Its totient is φ = 1182140640.

The previous prime is 3546421961. The next prime is 3546421981. The reversal of 3546421968 is 8691246453.

It is a super-2 number, since 2×3546421968² = 25154217550225986048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 73883791 = 3546421968 / (3 + 5 + 4 + 6 + 4 + 2 + 1 + 9 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3546421961) 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, 36941848 + ... + 36941943.

Almost surely, 2^3546421968 is an apocalyptic number.

It is an amenable number.

3546421968 is an abundant number, since it is smaller than the sum of its proper divisors (5615168240).

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

3546421968 is a wasteful number, since it uses less digits than its factorization.

3546421968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73883802 (or 73883796 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 48.

The square root of 3546421968 is about 59551.8426918933. The cubic root of 3546421968 is about 1524.9776175878.

The spelling of 3546421968 in words is "three billion, five hundred forty-six million, four hundred twenty-one thousand, nine hundred sixty-eight".