101849381 has 8 divisors (see below), whose sum is σ = 103793880. Its totient is φ = 99919872.

The previous prime is 101849369. The next prime is 101849401. The reversal of 101849381 is 183948101.

It can be written as a sum of positive squares in 4 ways, for example, as 38328481 + 63520900 = 6191^2 + 7970^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101849381 is a prime.

It is a super-2 number, since 2×101849381² = 20746592820166322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101849311) 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, 10475 + ... + 17703.

It is an arithmetic number, because the mean of its divisors is an integer number (12974235).

Almost surely, 2^101849381 is an apocalyptic number.

It is an amenable number.

101849381 is a deficient number, since it is larger than the sum of its proper divisors (1944499).

101849381 is an equidigital number, since it uses as much as digits as its factorization.

101849381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7495.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 101849381 is about 10092.0454319231. The cubic root of 101849381 is about 467.0027786656.

The spelling of 101849381 in words is "one hundred one million, eight hundred forty-nine thousand, three hundred eighty-one".