2027651691 has 12 divisors (see below), whose sum is σ = 2927497848. Its totient is φ = 1247785344.

The previous prime is 2027651669. The next prime is 2027651699. The reversal of 2027651691 is 1961567202.

It is not a de Polignac number, because 2027651691 - 2⁹ = 2027651179 is a prime.

It is a super-2 number, since 2×2027651691² = 8222742760030318962, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2027651699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1999150 + ... + 2000163.

It is an arithmetic number, because the mean of its divisors is an integer number (243958154).

Almost surely, 2^2027651691 is an apocalyptic number.

2027651691 is a deficient number, since it is larger than the sum of its proper divisors (899846157).

2027651691 is a wasteful number, since it uses less digits than its factorization.

2027651691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3999342 (or 3999329 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 2027651691 is about 45029.4535942865. The cubic root of 2027651691 is about 1265.7009849383.

The spelling of 2027651691 in words is "two billion, twenty-seven million, six hundred fifty-one thousand, six hundred ninety-one".