1898328541 has 4 divisors (see below), whose sum is σ = 1904807772. Its totient is φ = 1891849312.

The previous prime is 1898328521. The next prime is 1898328547. The reversal of 1898328541 is 1458238981.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1425440025 + 472888516 = 37755^2 + 21746^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1898328541 is a prime.

It is a super-3 number, since 3×1898328541³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898328547) 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, 3239176 + ... + 3239761.

It is an arithmetic number, because the mean of its divisors is an integer number (476201943).

Almost surely, 2^1898328541 is an apocalyptic number.

It is an amenable number.

1898328541 is a deficient number, since it is larger than the sum of its proper divisors (6479231).

1898328541 is an equidigital number, since it uses as much as digits as its factorization.

1898328541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6479230.

The product of its digits is 552960, while the sum is 49.

The square root of 1898328541 is about 43569.8122672109. The cubic root of 1898328541 is about 1238.1990290137.

It can be divided in two parts, 18983 and 28541, that added together give a square (47524 = 218²).

The spelling of 1898328541 in words is "one billion, eight hundred ninety-eight million, three hundred twenty-eight thousand, five hundred forty-one".