1050981690 has 64 divisors (see below), whose sum is σ = 2784886272. Its totient is φ = 251707200.

The previous prime is 1050981671. The next prime is 1050981703. The reversal of 1050981690 is 961890501.

It is a super-2 number, since 2×1050981690² = 2209125025430512200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

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 31 ways as a sum of consecutive naturals, for example, 8205 + ... + 46575.

It is an arithmetic number, because the mean of its divisors is an integer number (43513848).

Almost surely, 2^1050981690 is an apocalyptic number.

1050981690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1050981690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1392443136).

1050981690 is an abundant number, since it is smaller than the sum of its proper divisors (1733904582).

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

1050981690 is a wasteful number, since it uses less digits than its factorization.

1050981690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38475.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 1050981690 is about 32418.8477586727. The cubic root of 1050981690 is about 1016.7130156540.

The spelling of 1050981690 in words is "one billion, fifty million, nine hundred eighty-one thousand, six hundred ninety".