3158798661 has 32 divisors (see below), whose sum is σ = 4835635200. Its totient is φ = 2035836720.

The previous prime is 3158798641. The next prime is 3158798663. The reversal of 3158798661 is 1668978513.

3158798661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3158798661 - 2¹³ = 3158790469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3158798598 and 3158798607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3158798663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1595170 + ... + 1597148.

It is an arithmetic number, because the mean of its divisors is an integer number (151113600).

Almost surely, 2^3158798661 is an apocalyptic number.

3158798661 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3158798661 is a deficient number, since it is larger than the sum of its proper divisors (1676836539).

3158798661 is a wasteful number, since it uses less digits than its factorization.

3158798661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3926 (or 3920 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 3158798661 is about 56203.1908435811. The cubic root of 3158798661 is about 1467.2608006514.

The spelling of 3158798661 in words is "three billion, one hundred fifty-eight million, seven hundred ninety-eight thousand, six hundred sixty-one".