3855651401 has 4 divisors (see below), whose sum is σ = 4406458752. Its totient is φ = 3304844052.

The previous prime is 3855651347. The next prime is 3855651403. The reversal of 3855651401 is 1041565583.

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 3855651401 - 2⁶ = 3855651337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3855651403) 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, 275403665 + ... + 275403678.

It is an arithmetic number, because the mean of its divisors is an integer number (1101614688).

Almost surely, 2^3855651401 is an apocalyptic number.

It is an amenable number.

3855651401 is a deficient number, since it is larger than the sum of its proper divisors (550807351).

3855651401 is an equidigital number, since it uses as much as digits as its factorization.

3855651401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550807350.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 3855651401 is about 62093.8918171506. The cubic root of 3855651401 is about 1568.0717128508.

The spelling of 3855651401 in words is "three billion, eight hundred fifty-five million, six hundred fifty-one thousand, four hundred one".