1895798641 has 4 divisors (see below), whose sum is σ = 2068143984. Its totient is φ = 1723453300.

The previous prime is 1895798603. The next prime is 1895798659. The reversal of 1895798641 is 1468975981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1468975981 = 11 ⋅133543271.

It is a cyclic number.

It is not a de Polignac number, because 1895798641 - 2²⁷ = 1761580913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1895798141) 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, 86172655 + ... + 86172676.

It is an arithmetic number, because the mean of its divisors is an integer number (517035996).

Almost surely, 2^1895798641 is an apocalyptic number.

1895798641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1895798641 is a deficient number, since it is larger than the sum of its proper divisors (172345343).

1895798641 is a wasteful number, since it uses less digits than its factorization.

1895798641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172345342.

The product of its digits is 4354560, while the sum is 58.

The square root of 1895798641 is about 43540.7698714664. The cubic root of 1895798641 is about 1237.6487357328.

The spelling of 1895798641 in words is "one billion, eight hundred ninety-five million, seven hundred ninety-eight thousand, six hundred forty-one".