2138747611 has 32 divisors (see below), whose sum is σ = 3040547328. Its totient is φ = 1447856640.

The previous prime is 2138747587. The next prime is 2138747617. The reversal of 2138747611 is 1167478312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2138747611 - 2⁵ = 2138747579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2138747617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45825 + ... + 79858.

It is an arithmetic number, because the mean of its divisors is an integer number (95017104).

Almost surely, 2^2138747611 is an apocalyptic number.

2138747611 is a deficient number, since it is larger than the sum of its proper divisors (901799717).

2138747611 is a wasteful number, since it uses less digits than its factorization.

2138747611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125731.

The product of its digits is 56448, while the sum is 40.

The square root of 2138747611 is about 46246.5956693031. The cubic root of 2138747611 is about 1288.4073068770.

The spelling of 2138747611 in words is "two billion, one hundred thirty-eight million, seven hundred forty-seven thousand, six hundred eleven".