2001735187138 has 4 divisors (see below), whose sum is σ = 3002602780710. Its totient is φ = 1000867593568.

The previous prime is 2001735187099. The next prime is 2001735187187. The reversal of 2001735187138 is 8317815371002.

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., 1864855166409 + 136880020729 = 1365597^2 + 369973^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500433796783 + ... + 500433796786.

Almost surely, 2^{2001735187138} is an apocalyptic number.

2001735187138 is a deficient number, since it is larger than the sum of its proper divisors (1000867593572).

2001735187138 is a wasteful number, since it uses less digits than its factorization.

2001735187138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000867593571.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 2001735187138 in words is "two trillion, one billion, seven hundred thirty-five million, one hundred eighty-seven thousand, one hundred thirty-eight".