2006139136 has 18 divisors (see below), whose sum is σ = 4004442302. Its totient is φ = 1003069440.

The previous prime is 2006139131. The next prime is 2006139169. The reversal of 2006139136 is 6319316002.

It can be written as a sum of positive squares in only one way, i.e., 1474560000 + 531579136 = 38400^2 + 23056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2006139098 and 2006139107.

It is not an unprimeable number, because it can be changed into a prime (2006139131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3917985 + ... + 3918496.

Almost surely, 2^2006139136 is an apocalyptic number.

It is an amenable number.

2006139136 is a deficient number, since it is larger than the sum of its proper divisors (1998303166).

2006139136 is an frugal number, since it uses more digits than its factorization.

2006139136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7836497 (or 7836483 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 2006139136 is about 44789.9445858108. The cubic root of 2006139136 is about 1261.2088708867.

The spelling of 2006139136 in words is "two billion, six million, one hundred thirty-nine thousand, one hundred thirty-six".