3631398155 has 48 divisors (see below), whose sum is σ = 5540596992. Its totient is φ = 2236238400.

The previous prime is 3631398151. The next prime is 3631398181. The reversal of 3631398155 is 5518931363.

It is not a de Polignac number, because 3631398155 - 2² = 3631398151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3631398151) 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 47 ways as a sum of consecutive naturals, for example, 346340 + ... + 356670.

It is an arithmetic number, because the mean of its divisors is an integer number (115429104).

Almost surely, 2^3631398155 is an apocalyptic number.

3631398155 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3631398155 is a deficient number, since it is larger than the sum of its proper divisors (1909198837).

3631398155 is a wasteful number, since it uses less digits than its factorization.

3631398155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10448 (or 10437 counting only the distinct ones).

The product of its digits is 291600, while the sum is 44.

The square root of 3631398155 is about 60261.0832544520. The cubic root of 3631398155 is about 1537.0616590760.

The spelling of 3631398155 in words is "three billion, six hundred thirty-one million, three hundred ninety-eight thousand, one hundred fifty-five".