3554751681 has 24 divisors (see below), whose sum is σ = 5536579776. Its totient is φ = 2184783840.

The previous prime is 3554751659. The next prime is 3554751689. The reversal of 3554751681 is 1861574553.

3554751681 is a `hidden beast` number, since 3 + 5 + 54 + 7 + 516 + 81 = 666.

It is not a de Polignac number, because 3554751681 - 2⁹ = 3554751169 is a prime.

It is a super-2 number, since 2×3554751681² = 25272519027144651522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3554751689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76156 + ... + 113618.

It is an arithmetic number, because the mean of its divisors is an integer number (230690824).

Almost surely, 2^3554751681 is an apocalyptic number.

It is an amenable number.

3554751681 is a deficient number, since it is larger than the sum of its proper divisors (1981828095).

3554751681 is a wasteful number, since it uses less digits than its factorization.

3554751681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38293 (or 38290 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 3554751681 is about 59621.7383258824. The cubic root of 3554751681 is about 1526.1706222363.

The spelling of 3554751681 in words is "three billion, five hundred fifty-four million, seven hundred fifty-one thousand, six hundred eighty-one".