1016889380 has 48 divisors (see below), whose sum is σ = 2355850224. Its totient is φ = 366305280.

The previous prime is 1016889319. The next prime is 1016889383. The reversal of 1016889380 is 839886101.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 52911076 + 963978304 = 7274^2 + 31048^2 .

It is a super-2 number, since 2×1016889380² = 2068128022313568800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1016889383) 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 15 ways as a sum of consecutive naturals, for example, 37037 + ... + 58356.

It is an arithmetic number, because the mean of its divisors is an integer number (49080213).

Almost surely, 2^1016889380 is an apocalyptic number.

1016889380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1016889380 is an abundant number, since it is smaller than the sum of its proper divisors (1338960844).

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

1016889380 is a wasteful number, since it uses less digits than its factorization.

1016889380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95456 (or 95454 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 1016889380 is about 31888.7030153313. The cubic root of 1016889380 is about 1005.5983928426.

The spelling of 1016889380 in words is "one billion, sixteen million, eight hundred eighty-nine thousand, three hundred eighty".