6132671981 has 2 divisors, whose sum is σ = 6132671982. Its totient is φ = 6132671980.

The previous prime is 6132671969. The next prime is 6132672019. The reversal of 6132671981 is 1891762316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5660305225 + 472366756 = 75235^2 + 21734^2 .

It is a cyclic number.

It is not a de Polignac number, because 6132671981 - 2⁶ = 6132671917 is a prime.

It is a super-2 number, since 2×6132671981² = 75219331253084928722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6132671921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3066335990 + 3066335991.

It is an arithmetic number, because the mean of its divisors is an integer number (3066335991).

Almost surely, 2^6132671981 is an apocalyptic number.

It is an amenable number.

6132671981 is a deficient number, since it is larger than the sum of its proper divisors (1).

6132671981 is an equidigital number, since it uses as much as digits as its factorization.

6132671981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 44.

The square root of 6132671981 is about 78311.3783622789. The cubic root of 6132671981 is about 1830.4164580168.

The spelling of 6132671981 in words is "six billion, one hundred thirty-two million, six hundred seventy-one thousand, nine hundred eighty-one".