1641134051 has 4 divisors (see below), whose sum is σ = 1645464600. Its totient is φ = 1636803504.

The previous prime is 1641134039. The next prime is 1641134081. The reversal of 1641134051 is 1504311461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1504311461 = 29 ⋅51872809.

It is a cyclic number.

It is not a de Polignac number, because 1641134051 - 2¹⁰ = 1641133027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1641134051.

It is not an unprimeable number, because it can be changed into a prime (1641134081) 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, 2164706 + ... + 2165463.

It is an arithmetic number, because the mean of its divisors is an integer number (411366150).

Almost surely, 2^1641134051 is an apocalyptic number.

1641134051 is a deficient number, since it is larger than the sum of its proper divisors (4330549).

1641134051 is an equidigital number, since it uses as much as digits as its factorization.

1641134051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4330548.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1641134051 is about 40510.9127396557. The cubic root of 1641134051 is about 1179.5454657965.

The spelling of 1641134051 in words is "one billion, six hundred forty-one million, one hundred thirty-four thousand, fifty-one".