1898134829 has 4 divisors (see below), whose sum is σ = 1915549020. Its totient is φ = 1880720640.

The previous prime is 1898134807. The next prime is 1898134841. The reversal of 1898134829 is 9284318981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9284318981 = 7 ⋅1326331283.

It can be written as a sum of positive squares in 2 ways, for example, as 734301604 + 1163833225 = 27098^2 + 34115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1898134829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898134879) 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, 8706932 + ... + 8707149.

It is an arithmetic number, because the mean of its divisors is an integer number (478887255).

Almost surely, 2^1898134829 is an apocalyptic number.

It is an amenable number.

1898134829 is a deficient number, since it is larger than the sum of its proper divisors (17414191).

1898134829 is a wasteful number, since it uses less digits than its factorization.

1898134829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17414190.

The product of its digits is 995328, while the sum is 53.

The square root of 1898134829 is about 43567.5892034434. The cubic root of 1898134829 is about 1238.1569108794.

The spelling of 1898134829 in words is "one billion, eight hundred ninety-eight million, one hundred thirty-four thousand, eight hundred twenty-nine".