2061539738 has 4 divisors (see below), whose sum is σ = 3092309610. Its totient is φ = 1030769868.

The previous prime is 2061539723. The next prime is 2061539743. The reversal of 2061539738 is 8379351602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1605845329 + 455694409 = 40073^2 + 21347^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515384933 + ... + 515384936.

Almost surely, 2^2061539738 is an apocalyptic number.

2061539738 is a deficient number, since it is larger than the sum of its proper divisors (1030769872).

2061539738 is a wasteful number, since it uses less digits than its factorization.

2061539738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030769871.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 2061539738 is about 45404.1819439575. The cubic root of 2061539738 is about 1272.7132638034.

The spelling of 2061539738 in words is "two billion, sixty-one million, five hundred thirty-nine thousand, seven hundred thirty-eight".