3634555401 has 16 divisors (see below), whose sum is σ = 5486123520. Its totient is φ = 2377318320.

The previous prime is 3634555373. The next prime is 3634555403. The reversal of 3634555401 is 1045554363.

3634555401 is a `hidden beast` number, since 3 + 63 + 4 + 55 + 540 + 1 = 666.

It is not a de Polignac number, because 3634555401 - 2⁵ = 3634555369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3634555403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1268505 + ... + 1271366.

It is an arithmetic number, because the mean of its divisors is an integer number (342882720).

Almost surely, 2^3634555401 is an apocalyptic number.

It is an amenable number.

3634555401 is a deficient number, since it is larger than the sum of its proper divisors (1851568119).

3634555401 is a wasteful number, since it uses less digits than its factorization.

3634555401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539933 (or 2539927 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The square root of 3634555401 is about 60287.2739556202. The cubic root of 3634555401 is about 1537.5069858100.

The spelling of 3634555401 in words is "three billion, six hundred thirty-four million, five hundred fifty-five thousand, four hundred one".