3651115042 has 4 divisors (see below), whose sum is σ = 5476672566. Its totient is φ = 1825557520.

The previous prime is 3651115019. The next prime is 3651115043. The reversal of 3651115042 is 2405111563.

3651115042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 2925836281 + 725278761 = 54091^2 + 26931^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3651115042.

It is not an unprimeable number, because it can be changed into a prime (3651115043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 912778759 + ... + 912778762.

Almost surely, 2^3651115042 is an apocalyptic number.

3651115042 is a deficient number, since it is larger than the sum of its proper divisors (1825557524).

3651115042 is a wasteful number, since it uses less digits than its factorization.

3651115042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825557523.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 3651115042 is about 60424.4573165535. The cubic root of 3651115042 is about 1539.8384946163.

The spelling of 3651115042 in words is "three billion, six hundred fifty-one million, one hundred fifteen thousand, forty-two".