981569802 has 16 divisors (see below), whose sum is σ = 2026467072. Its totient is φ = 316635360.

The previous prime is 981569801. The next prime is 981569821. The reversal of 981569802 is 208965189.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (981569801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2638443 + ... + 2638814.

It is an arithmetic number, because the mean of its divisors is an integer number (126654192).

Almost surely, 2^981569802 is an apocalyptic number.

981569802 is an abundant number, since it is smaller than the sum of its proper divisors (1044897270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

981569802 is a wasteful number, since it uses less digits than its factorization.

981569802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5277293.

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 981569802 is about 31330.0143951451. The cubic root of 981569802 is about 993.8184680645.

The spelling of 981569802 in words is "nine hundred eighty-one million, five hundred sixty-nine thousand, eight hundred two".