981354265 has 4 divisors (see below), whose sum is σ = 1177625124. Its totient is φ = 785083408.

The previous prime is 981354251. The next prime is 981354277. The reversal of 981354265 is 562453189.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 279157264 + 702197001 = 16708^2 + 26499^2 .

It is a cyclic number.

It is not a de Polignac number, because 981354265 - 2¹³ = 981346073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98135422 + ... + 98135431.

It is an arithmetic number, because the mean of its divisors is an integer number (294406281).

Almost surely, 2^981354265 is an apocalyptic number.

It is an amenable number.

981354265 is a deficient number, since it is larger than the sum of its proper divisors (196270859).

981354265 is a wasteful number, since it uses less digits than its factorization.

981354265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196270858.

The product of its digits is 259200, while the sum is 43.

The square root of 981354265 is about 31326.5744217270. The cubic root of 981354265 is about 993.7457205359.

It can be divided in two parts, 98135 and 4265, that added together give a square (102400 = 320²).

The spelling of 981354265 in words is "nine hundred eighty-one million, three hundred fifty-four thousand, two hundred sixty-five".