3157242646 has 8 divisors (see below), whose sum is σ = 4751291160. Its totient is φ = 1573478928.

The previous prime is 3157242643. The next prime is 3157242667. The reversal of 3157242646 is 6462427513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×3157242646² = 19936362251442162632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3157242599 and 3157242608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3157242643) 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, 2570431 + ... + 2571658.

It is an arithmetic number, because the mean of its divisors is an integer number (593911395).

Almost surely, 2^3157242646 is an apocalyptic number.

3157242646 is a deficient number, since it is larger than the sum of its proper divisors (1594048514).

3157242646 is a wasteful number, since it uses less digits than its factorization.

3157242646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5142398.

The product of its digits is 241920, while the sum is 40.

The square root of 3157242646 is about 56189.3463745575. The cubic root of 3157242646 is about 1467.0198382855.

The spelling of 3157242646 in words is "three billion, one hundred fifty-seven million, two hundred forty-two thousand, six hundred forty-six".