2957213681 has 8 divisors (see below), whose sum is σ = 2974444800. Its totient is φ = 2940023520.

The previous prime is 2957213653. The next prime is 2957213711. The reversal of 2957213681 is 1863127592.

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

It is a cyclic number.

It is not a de Polignac number, because 2957213681 - 2¹⁸ = 2956951537 is a prime.

It is a super-2 number, since 2×2957213681² = 17490225510187139522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2957212681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141005 + ... + 160613.

It is an arithmetic number, because the mean of its divisors is an integer number (371805600).

Almost surely, 2^2957213681 is an apocalyptic number.

It is an amenable number.

2957213681 is a deficient number, since it is larger than the sum of its proper divisors (17231119).

2957213681 is a wasteful number, since it uses less digits than its factorization.

2957213681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20479.

The product of its digits is 181440, while the sum is 44.

The square root of 2957213681 is about 54380.2692251519. The cubic root of 2957213681 is about 1435.3602079068.

The spelling of 2957213681 in words is "two billion, nine hundred fifty-seven million, two hundred thirteen thousand, six hundred eighty-one".