3698621133381 has 10 divisors (see below), whose sum is σ = 5525100705542. Its totient is φ = 2465747422200.

The previous prime is 3698621133239. The next prime is 3698621133413. The reversal of 3698621133381 is 1833311268963.

3698621133381 is a `hidden beast` number, since 3 + 6 + 9 + 8 + 621 + 1 + 3 + 3 + 3 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1952433317025 + 1746187816356 = 1397295^2 + 1321434^2 .

It is not a de Polignac number, because 3698621133381 - 2²² = 3698616939077 is a prime.

It is a super-3 number, since 3×3698621133381³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3698621134381) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 22830994570 + ... + 22830994731.

Almost surely, 2^{3698621133381} is an apocalyptic number.

It is an amenable number.

3698621133381 is a deficient number, since it is larger than the sum of its proper divisors (1826479572161).

3698621133381 is an equidigital number, since it uses as much as digits as its factorization.

3698621133381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45661989313 (or 45661989304 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The spelling of 3698621133381 in words is "three trillion, six hundred ninety-eight billion, six hundred twenty-one million, one hundred thirty-three thousand, three hundred eighty-one".