3651171432 has 128 divisors (see below), whose sum is σ = 9729331200. Its totient is φ = 1139390208.

The previous prime is 3651171421. The next prime is 3651171437. The reversal of 3651171432 is 2341711563.

It is a junction number, because it is equal to n+sod(n) for n = 3651171393 and 3651171402.

It is not an unprimeable number, because it can be changed into a prime (3651171437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9948513 + ... + 9948879.

It is an arithmetic number, because the mean of its divisors is an integer number (76010400).

Almost surely, 2^3651171432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3651171432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4864665600).

3651171432 is an abundant number, since it is smaller than the sum of its proper divisors (6078159768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3651171432 is a wasteful number, since it uses less digits than its factorization.

3651171432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735 (or 731 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 3651171432 is about 60424.9239304445. The cubic root of 3651171432 is about 1539.8464219704.

Adding to 3651171432 its reverse (2341711563), we get a palindrome (5992882995).

The spelling of 3651171432 in words is "three billion, six hundred fifty-one million, one hundred seventy-one thousand, four hundred thirty-two".