1026009690 has 32 divisors (see below), whose sum is σ = 2592025920. Its totient is φ = 259202304.

The previous prime is 1026009683. The next prime is 1026009703. The reversal of 1026009690 is 969006201.

It is a happy number.

It is a super-2 number, since 2×1026009690² = 2105391767947792200, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 899439 + ... + 900578.

It is an arithmetic number, because the mean of its divisors is an integer number (81000810).

Almost surely, 2^1026009690 is an apocalyptic number.

1026009690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1026009690 is an abundant number, since it is smaller than the sum of its proper divisors (1566016230).

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

1026009690 is a wasteful number, since it uses less digits than its factorization.

1026009690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800046.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1026009690 is about 32031.3860143454. The cubic root of 1026009690 is about 1008.5957972287.

The spelling of 1026009690 in words is "one billion, twenty-six million, nine thousand, six hundred ninety".