3609861351 has 4 divisors (see below), whose sum is σ = 4813148472. Its totient is φ = 2406574232.

The previous prime is 3609861349. The next prime is 3609861373. The reversal of 3609861351 is 1531689063.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3609861351 - 2¹ = 3609861349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3609861551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601643556 + ... + 601643561.

It is an arithmetic number, because the mean of its divisors is an integer number (1203287118).

Almost surely, 2^3609861351 is an apocalyptic number.

3609861351 is a deficient number, since it is larger than the sum of its proper divisors (1203287121).

3609861351 is a wasteful number, since it uses less digits than its factorization.

3609861351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203287120.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 3609861351 is about 60082.1217251854. The cubic root of 3609861351 is about 1534.0170049173.

The spelling of 3609861351 in words is "three billion, six hundred nine million, eight hundred sixty-one thousand, three hundred fifty-one".