3661231448 has 192 divisors, whose sum is σ = 8932032000. Its totient is φ = 1371617280.

The previous prime is 3661231447. The next prime is 3661231477. The reversal of 3661231448 is 8441321663.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661231447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41137388 + ... + 41137476.

It is an arithmetic number, because the mean of its divisors is an integer number (46521000).

Almost surely, 2^3661231448 is an apocalyptic number.

3661231448 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3661231448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4466016000).

3661231448 is an abundant number, since it is smaller than the sum of its proper divisors (5270800552).

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

3661231448 is a wasteful number, since it uses less digits than its factorization.

3661231448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 181 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 3661231448 is about 60508.1105968448. The cubic root of 3661231448 is about 1541.2593633975.

The spelling of 3661231448 in words is "three billion, six hundred sixty-one million, two hundred thirty-one thousand, four hundred forty-eight".