3621974401 has 4 divisors (see below), whose sum is σ = 3746870100. Its totient is φ = 3497078704.

The previous prime is 3621974371. The next prime is 3621974413. The reversal of 3621974401 is 1044791263.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1574502400 + 2047472001 = 39680^2 + 45249^2 .

It is a cyclic number.

It is not a de Polignac number, because 3621974401 - 2¹⁹ = 3621450113 is a prime.

It is a super-2 number, since 2×3621974401² = 26237397122998617602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3621974101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62447806 + ... + 62447863.

It is an arithmetic number, because the mean of its divisors is an integer number (936717525).

Almost surely, 2^3621974401 is an apocalyptic number.

It is an amenable number.

3621974401 is a deficient number, since it is larger than the sum of its proper divisors (124895699).

3621974401 is a wasteful number, since it uses less digits than its factorization.

3621974401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124895698.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 3621974401 is about 60182.8414168025. The cubic root of 3621974401 is about 1535.7309100337.

The spelling of 3621974401 in words is "three billion, six hundred twenty-one million, nine hundred seventy-four thousand, four hundred one".