3581281957 has 8 divisors (see below), whose sum is σ = 3956307840. Its totient is φ = 3214498560.

The previous prime is 3581281943. The next prime is 3581281967. The reversal of 3581281957 is 7591821853.

3581281957 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3581281957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3581281957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3581281927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2059708 + ... + 2061445.

It is an arithmetic number, because the mean of its divisors is an integer number (494538480).

Almost surely, 2^3581281957 is an apocalyptic number.

It is an amenable number.

3581281957 is a deficient number, since it is larger than the sum of its proper divisors (375025883).

3581281957 is a wasteful number, since it uses less digits than its factorization.

3581281957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121243.

The product of its digits is 604800, while the sum is 49.

The square root of 3581281957 is about 59843.8130218989. The cubic root of 3581281957 is about 1529.9579860877.

The spelling of 3581281957 in words is "three billion, five hundred eighty-one million, two hundred eighty-one thousand, nine hundred fifty-seven".