1642048187 has 4 divisors (see below), whose sum is σ = 1768359600. Its totient is φ = 1515736776.

The previous prime is 1642048183. The next prime is 1642048193. The reversal of 1642048187 is 7818402461.

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

It is a cyclic number.

It is not a de Polignac number, because 1642048187 - 2² = 1642048183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1642048183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63155687 + ... + 63155712.

It is an arithmetic number, because the mean of its divisors is an integer number (442089900).

Almost surely, 2^1642048187 is an apocalyptic number.

1642048187 is a deficient number, since it is larger than the sum of its proper divisors (126311413).

1642048187 is a wasteful number, since it uses less digits than its factorization.

1642048187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126311412.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 1642048187 is about 40522.1937584825. The cubic root of 1642048187 is about 1179.7644332501.

The spelling of 1642048187 in words is "one billion, six hundred forty-two million, forty-eight thousand, one hundred eighty-seven".