2006861788 has 6 divisors (see below), whose sum is σ = 3512008136. Its totient is φ = 1003430892.

The previous prime is 2006861777. The next prime is 2006861821. The reversal of 2006861788 is 8871686002.

It is a super-2 number, since 2×2006861788² = 8054988472269113888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250857720 + ... + 250857727.

Almost surely, 2^2006861788 is an apocalyptic number.

It is an amenable number.

2006861788 is a deficient number, since it is larger than the sum of its proper divisors (1505146348).

2006861788 is a wasteful number, since it uses less digits than its factorization.

2006861788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501715451 (or 501715449 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 2006861788 is about 44798.0109826318. The cubic root of 2006861788 is about 1261.3602903773.

The spelling of 2006861788 in words is "two billion, six million, eight hundred sixty-one thousand, seven hundred eighty-eight".