1835445381 has 24 divisors (see below), whose sum is σ = 3105617184. Its totient is φ = 953477280.

The previous prime is 1835445361. The next prime is 1835445383.

It is a happy number.

1835445381 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1835445381 - 2¹¹ = 1835443333 is a prime.

It is a super-2 number, since 2×1835445381² = 6737719493268470322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1835445383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 565930 + ... + 569163.

It is an arithmetic number, because the mean of its divisors is an integer number (129400716).

Almost surely, 2^1835445381 is an apocalyptic number.

1835445381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1835445381 is a deficient number, since it is larger than the sum of its proper divisors (1270171803).

1835445381 is a wasteful number, since it uses less digits than its factorization.

1835445381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135121 (or 1135114 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The square root of 1835445381 is about 42842.0982329297. The cubic root of 1835445381 is about 1224.3732194938.

The spelling of 1835445381 in words is "one billion, eight hundred thirty-five million, four hundred forty-five thousand, three hundred eighty-one".