3918999997153 has 4 divisors (see below), whose sum is σ = 3919009789188. Its totient is φ = 3918990205120.

The previous prime is 3918999997147. The next prime is 3918999997243. The reversal of 3918999997153 is 3517999998193.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2072151613009 + 1846848384144 = 1439497^2 + 1358988^2 .

It is a cyclic number.

It is not a de Polignac number, because 3918999997153 - 2⁹ = 3918999996641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3918999697153) 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, 4268908 + ... + 5105053.

It is an arithmetic number, because the mean of its divisors is an integer number (979752447297).

Almost surely, 2^{3918999997153} is an apocalyptic number.

It is an amenable number.

3918999997153 is a deficient number, since it is larger than the sum of its proper divisors (9792035).

3918999997153 is an equidigital number, since it uses as much as digits as its factorization.

3918999997153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9792034.

The product of its digits is 1339231320, while the sum is 82.

The spelling of 3918999997153 in words is "three trillion, nine hundred eighteen billion, nine hundred ninety-nine million, nine hundred ninety-seven thousand, one hundred fifty-three".