102981865 has 16 divisors (see below), whose sum is σ = 141401088. Its totient is φ = 70531776.

The previous prime is 102981863. The next prime is 102981889. The reversal of 102981865 is 568189201.

It is not a de Polignac number, because 102981865 - 2¹ = 102981863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102981863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46984 + ... + 49126.

It is an arithmetic number, because the mean of its divisors is an integer number (8837568).

Almost surely, 2^102981865 is an apocalyptic number.

It is an amenable number.

102981865 is a deficient number, since it is larger than the sum of its proper divisors (38419223).

102981865 is a wasteful number, since it uses less digits than its factorization.

102981865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3528.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 102981865 is about 10147.9980784389. The cubic root of 102981865 is about 468.7273022491.

The spelling of 102981865 in words is "one hundred two million, nine hundred eighty-one thousand, eight hundred sixty-five".