3634749021 has 8 divisors (see below), whose sum is σ = 4959037600. Its totient is φ = 2366813232.

The previous prime is 3634749011. The next prime is 3634749023. The reversal of 3634749021 is 1209474363.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3634749021 - 2⁷ = 3634748893 is a prime.

It is a super-2 number, since 2×3634749021² = 26422800891320916882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3634749023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14088046 + ... + 14088303.

It is an arithmetic number, because the mean of its divisors is an integer number (619879700).

Almost surely, 2^3634749021 is an apocalyptic number.

It is an amenable number.

3634749021 is a deficient number, since it is larger than the sum of its proper divisors (1324288579).

3634749021 is a wasteful number, since it uses less digits than its factorization.

3634749021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28176395.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 3634749021 is about 60288.8797457707. The cubic root of 3634749021 is about 1537.5342873443.

The spelling of 3634749021 in words is "three billion, six hundred thirty-four million, seven hundred forty-nine thousand, twenty-one".