1898982481 has 8 divisors (see below), whose sum is σ = 2096577504. Its totient is φ = 1705547520.

The previous prime is 1898982479. The next prime is 1898982523. The reversal of 1898982481 is 1842898981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1898982481 - 2¹ = 1898982479 is a prime.

It is a super-2 number, since 2×1898982481² = 7212268926289830722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1898982431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1039056 + ... + 1040881.

It is an arithmetic number, because the mean of its divisors is an integer number (262072188).

Almost surely, 2^1898982481 is an apocalyptic number.

1898982481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1898982481 is a deficient number, since it is larger than the sum of its proper divisors (197595023).

1898982481 is a wasteful number, since it uses less digits than its factorization.

1898982481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080031.

The product of its digits is 2654208, while the sum is 58.

The square root of 1898982481 is about 43577.3161289219. The cubic root of 1898982481 is about 1238.3411917807.

The spelling of 1898982481 in words is "one billion, eight hundred ninety-eight million, nine hundred eighty-two thousand, four hundred eighty-one".