981895405 has 8 divisors (see below), whose sum is σ = 1198245600. Its totient is φ = 772202256.

The previous prime is 981895403. The next prime is 981895459. The reversal of 981895405 is 504598189.

981895405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 981895405 - 2¹ = 981895403 is a prime.

It is a super-2 number, since 2×981895405² = 1928237172720228050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981895403) 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, 1663935 + ... + 1664524.

It is an arithmetic number, because the mean of its divisors is an integer number (149780700).

Almost surely, 2^981895405 is an apocalyptic number.

It is an amenable number.

981895405 is a deficient number, since it is larger than the sum of its proper divisors (216350195).

981895405 is a wasteful number, since it uses less digits than its factorization.

981895405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328523.

The product of its (nonzero) digits is 518400, while the sum is 49.

The square root of 981895405 is about 31335.2103072566. The cubic root of 981895405 is about 993.9283446114.

The spelling of 981895405 in words is "nine hundred eighty-one million, eight hundred ninety-five thousand, four hundred five".