3623378261 has 4 divisors (see below), whose sum is σ = 3814082400. Its totient is φ = 3432674124.

The previous prime is 3623378257. The next prime is 3623378263. The reversal of 3623378261 is 1628733263.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3623378261 - 2² = 3623378257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3623378263) 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, 95352041 + ... + 95352078.

It is an arithmetic number, because the mean of its divisors is an integer number (953520600).

Almost surely, 2^3623378261 is an apocalyptic number.

It is an amenable number.

3623378261 is a deficient number, since it is larger than the sum of its proper divisors (190704139).

3623378261 is a wasteful number, since it uses less digits than its factorization.

3623378261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190704138.

The product of its digits is 217728, while the sum is 41.

The square root of 3623378261 is about 60194.5035779846. The cubic root of 3623378261 is about 1535.9292983961.

The spelling of 3623378261 in words is "three billion, six hundred twenty-three million, three hundred seventy-eight thousand, two hundred sixty-one".