981500105 has 16 divisors (see below), whose sum is σ = 1202860800. Its totient is φ = 768606720.

The previous prime is 981500089. The next prime is 981500129. The reversal of 981500105 is 501005189.

It is not a de Polignac number, because 981500105 - 2⁴ = 981500089 is a prime.

It is a super-2 number, since 2×981500105² = 1926684912230022050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63545 + ... + 77465.

It is an arithmetic number, because the mean of its divisors is an integer number (75178800).

Almost surely, 2^981500105 is an apocalyptic number.

It is an amenable number.

981500105 is a deficient number, since it is larger than the sum of its proper divisors (221360695).

981500105 is a wasteful number, since it uses less digits than its factorization.

981500105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14224.

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 981500105 is about 31328.9020714100. The cubic root of 981500105 is about 993.7949452662.

The spelling of 981500105 in words is "nine hundred eighty-one million, five hundred thousand, one hundred five".